I am indeed desiring one, but I'm too picky. And it's not for the money, but rather mostly for socialization (I'm lonely af). Maybe I'd work at a startup, but there aren't many of those that would want an open-source app, and there are even fewer that do something legitimately useful instead of inventing a problem and then heroically solving it.
I worked at VKontakte (Russian social network) and was the only Android developer for several years. It was amazing when Pavel Durov was still the CEO. I was living the dream. It all went downhill form there when it was acquired by mail.ru group and I had to quit because it started feeling like an abusive relationship. My app being closed-source didn't help either.
Then was Telegram. Same Pavel, mostly same team, but the tasks were much more ambitious, and the product itself much more complex and internally intertwined (every single update touches the chat screen, which in the Android app is more than a megabyte of pure Java). I did the VoIP library from scratch. In hindsight, this certainly isn't a one-person endeavor, but I didn't know any better. So, yeah, eventually, but very unexpectedly, I was fired by that same person who I was a huge fan of for so many years. The reasoning was that "our calls are shit". Apparently I was supposed to write code that didn't contain bugs and just "test it myself". Oh all those foolish other companies having QAs, right?
I have no idea where to go now. I want my 2011 back. I want to be passionate about something again.
I would suggest the crypto industry, specifically DeFi. Reasoning:
* It's (mostly) all open-source.
* It's self-directed. Don't like a team? There are a dozen others waiting scrambling for developers that you can join with no bureaucracy nonsense. Want to work alone? The tools are mostly mature enough that you can release products as a one man team.
* You seem to have disinterest or even aversion towards money, from its role in tricking people into mindless jobs. DeFi is about the roots of what money is, voluntary transfer of value between people, which is something I think everybody can agree is fundamentally good.
To be honest, I don't really believe in crypto. All the blockchain stuff is mostly solutions looking for problems. And, after all these years, cryptocurrencies still haven't replaced regular money. I still can't buy a coffee with bitcoin. There were numerous efforts to create such a cryptocurrency, but they've all failed — because governments aren't letting go of the control they have over everything, and they have the necessary physical force to enforce these views. Currently, all I see about cryptocurrencies, is people mostly using them for trading or see them as an investment. Sometimes they buy drugs with them. And that's really it.
Though, yes, if I wanted easy money, I could go work at such a company. Or I could as well go to a FAANG-ish megacorp and earn craploads by working an hour a day.
There is a place where "a visionary founder with technical ability and clear view of the UI they want" no longer aligns with what we can provide. It can turn into a soul-destroying farce just like a "growing company admits as many middle-managers as there are designers/engineers" simply because The Visionary woke up one day and decided that "this UI we have is shit". Combine it with the Russian approach to "find the closest person responsible and punish them the hardest way possible" and you get the setup you have described.
Be very careful when putting your trust in visionaries.