There'd be value to a museum making a reproduction of a Model T, & there's value to the history of science, to focus on what kind of world scientists then were thinking in terms of when they created various hypotheses
I've invested a lot of my personal time in creating the fastest befunge implementations I know of. I intend to spend even more time eventually when I get to having it JIT to assembly. I find it fun, I don't get paid for it, & I have a modest salary (under 40k/yr)
It _did_ end up having positive outcomes, where I was JITing befunge code to python bytecode, & it got me thinking about the bytecode's performance, so to optimize my befunge implementation I went a level deeper & optimized the python implementation to wordcode instead of bytecode, giving anyone who uses Python 3.6 a 1% improvement
But maybe working on improving the performance of Python by 1% is frivolous, since Python's just some big codebase whose only use is in silly things like my befunge interpreter..
That said, I agree with you somewhat on that tech industry rant. I mention my salary's modest, but it was less while I was working as general labor in flooring, which was way more than when I was vending icecream off a bike (which was much more than when they'd have me put together coolant packs for 25$ in a 6 hour day)
You're directing it at the wrong thing. Writing a blog about some hobby project isn't what's wrong with the world