Agreed, though I think the idea was also to remove the chance of any snooping via elint. I do notice the Ruskies choosing electric type writers probably for reliability and evenness of the print output. I remember the IBM Selectrics [0] I used hacking up for "text repro", [1] far superior to manual typewriters that had, depending on the quality of the machine uneven application of ink. If you scan a copy you get superior reproduction.
[1] To make print ready artwork you can type up the text, print a negative and reproduce positive film copy to work with. Old school optical reproduction technology.
[0] https://en.wikipedia.org/wiki/IBM_Selectric_typewriter
[1] To make print ready artwork you can type up the text, print a negative and reproduce positive film copy to work with. Old school optical reproduction technology.