And if you think this is a shitpost, I can assure you that it is not, and that I have seen hundreds of people do exactly this thing for exactly these reasons, and every single one of them believed that they weren't
And to understand this problem better, ask yourself this question: what is more marketable and brandable, something that does one task well within a narrowly-defined scope, that you will only think about when you have that specific problem... or something that promises to solve all your problems (but turns out to do so poorly because of the impossible scope, and you'll only find that out 3 months later)?
And no, I am not talking about tools like grep, sed, or awk - those do lots of things, and have a very broad scope.
"You are not immune to propaganda" also applies to developer marketing, basically, and the problem is far far bigger than a bunch of startups *deliberately* propagandizing; there are masses of developers unknowingly contributing to the problem by unquestioningly accepting the dynamics involved, and developing new things in their shape, with the same problems