I don't think "Agile" is responsible, but it is a supporting character here for sure. Let me give a little history from my perspective.
I got involved in that movement before the word "Agile" existed; I was really interested in the ideas coming from the Extreme Programming folks and had tried them out on a small project in 2000. All of the people I met early on really wanted to do software well; the question was how to do it well and responsively. Unit and acceptance tests were just part of the process [1], and Kent Beck also wrote Test Driven Development By Example [2] around then. So in my view there was strong early interest in quality.
But this was all happening during the rise of the internet, which changed people's expectations for software delivery. Previously, releasing every 18 months was seen as reasonable. Suddenly the web was changing people's expectations. (Although not as fast as you'd think; a consultant pal told me in 2004 that Weight Watchers still had an annual release cycle for their website.) Executives and managers were under pressure to deliver faster.
As I wrote about elsewhere [3], that created a need for Agile that was filled not by the humanistic culture and quality-oriented practices of my end of the Agile world, but by consultants and certification programs watering down the material until executives could slap some new labels on their same old bullshit and call it Agile.
It turns out that bullshit long predates Agile. If you go back to Royce's original 1970 paper on Waterfall [4], one of his big points is that it doesn't work. Why, then, did it become the predominant way to organize software projects? Because it feels good to managers. For most of the project, it gives them a feeling of control and competence. That feeling is false, as it just delays all of the real-world feedback until near the nominal end. But they can perform confidence and competence to their boss, which is vital in managerialist [5] organizations.
So I totally agree with you that Agile on average has mutated into a garbage pipeline. And that happened through a whole industry that produced manager-friendly process theater that threw out a quality focus and most of the Agile values, while using the Agile labels. But I think the real responsibility lies in our management culture and values, which both precedes Agile and whose harm extends well beyond it.
I got involved in that movement before the word "Agile" existed; I was really interested in the ideas coming from the Extreme Programming folks and had tried them out on a small project in 2000. All of the people I met early on really wanted to do software well; the question was how to do it well and responsively. Unit and acceptance tests were just part of the process [1], and Kent Beck also wrote Test Driven Development By Example [2] around then. So in my view there was strong early interest in quality.
But this was all happening during the rise of the internet, which changed people's expectations for software delivery. Previously, releasing every 18 months was seen as reasonable. Suddenly the web was changing people's expectations. (Although not as fast as you'd think; a consultant pal told me in 2004 that Weight Watchers still had an annual release cycle for their website.) Executives and managers were under pressure to deliver faster.
As I wrote about elsewhere [3], that created a need for Agile that was filled not by the humanistic culture and quality-oriented practices of my end of the Agile world, but by consultants and certification programs watering down the material until executives could slap some new labels on their same old bullshit and call it Agile.
It turns out that bullshit long predates Agile. If you go back to Royce's original 1970 paper on Waterfall [4], one of his big points is that it doesn't work. Why, then, did it become the predominant way to organize software projects? Because it feels good to managers. For most of the project, it gives them a feeling of control and competence. That feeling is false, as it just delays all of the real-world feedback until near the nominal end. But they can perform confidence and competence to their boss, which is vital in managerialist [5] organizations.
So I totally agree with you that Agile on average has mutated into a garbage pipeline. And that happened through a whole industry that produced manager-friendly process theater that threw out a quality focus and most of the Agile values, while using the Agile labels. But I think the real responsibility lies in our management culture and values, which both precedes Agile and whose harm extends well beyond it.
[1] http://www.extremeprogramming.org/map/loops.html
[2] https://www.oreilly.com/library/view/test-driven-development...
[3] https://web.archive.org/web/20170923232057/http://agilefocus...
[4] https://pragtob.wordpress.com/2012/03/02/why-waterfall-was-a...
[5] See, e.g., https://www.bloomsbury.com/us/confronting-managerialism-9781...