My impression (based on long acquaintance with a whole bunch of them) is that most "older content creators" either write long-hand then copy-type on a word processor, or adopted word processing as their primary input mechanism with shrieks of glee in the 1980s. The ones who still insist on using a manual typewriter are eccentrics, or jerking your chain.
Manual typewriters were pigs. They take a lot of effort to operate and produce very uneven impressions on the page. Because it's a mechanical lever system, they have a very long key depression -- typically 2-3 centimetres. Ever trapped your pinkie under the (sharp) rim of an adjacent key? If you're not a very precise typist it happens every few minutes on a manual typewriter. Because of the effort involved in hammering the keys, and the fun of trying to clear the frequent key jams you experience if you type too fast -- the type arms need to have time between keystrokes in which to fall away from the platen; if you type too fast you end up jamming them together -- it's very difficult to attain the same typing speed on a manual typewriter as on an electric model of any kind (except for the early, insanely slow, daisy wheel machines) and you end up with sore, inky fingers.
Manual typewriters were pigs. They take a lot of effort to operate and produce very uneven impressions on the page. Because it's a mechanical lever system, they have a very long key depression -- typically 2-3 centimetres. Ever trapped your pinkie under the (sharp) rim of an adjacent key? If you're not a very precise typist it happens every few minutes on a manual typewriter. Because of the effort involved in hammering the keys, and the fun of trying to clear the frequent key jams you experience if you type too fast -- the type arms need to have time between keystrokes in which to fall away from the platen; if you type too fast you end up jamming them together -- it's very difficult to attain the same typing speed on a manual typewriter as on an electric model of any kind (except for the early, insanely slow, daisy wheel machines) and you end up with sore, inky fingers.
NB: Your go-to reference for the history of typewriters is "Century of the Typewriter" by Wilfred A. Beeching: http://www.amazon.com/Century-Typewriter-Pb-Wilfred-Beeching...