The author is sharing second thoughts about using the MIT license and yes, bad actors are going to break bad, but the point of licensing is to control re-use within the (enforceable) legal framework of copyright. Reciprocal licenses (thanks Lawrence Rosen[1] for that term less charged than copyleft or viral) cede less control, and provide more footholds for enforcement. Remember that GPL has (sometimes) worked as intended in adversarial commericial settings [2,3].

[1] https://www.oreilly.com/library/view/open-source-licensing/0...

[2] https://www.tp-link.com/us/support/gpl-code/

[3] https://www.zdnet.com/article/software-freedom-conservancy-w...