I think what you've done here is document the pain introduced by using TypeScript, but you've not documented the (unknown) pain from not using it. The question

I think what you've done here is document the pain introduced by using TypeScript, but you've not documented the (unknown) pain from not using it. The question should really be, are the development pains you have more or less than the (most likely) production pains you'd see if you weren't using it? I personally believe that more problems in development for reduced production outages is the right answer for the vast majority of software development. If would be interesting to know of cases where projects have stepped away from it. I'm sure there are some examples and it would be interesting to understand their reasoning.