As a young adult who had a roof over their head by default, I was 100% FOSS and installed Gentoo on anything I owned that could even limp its way along that path (and discarded devices that couldn't), I refused to use proprietary messaging tools and social networks, and I accepted that I had limited myself to the social and economic opportunities that these things allowed me, as a sort of altruistic techno-hippie.

Now I am on LinkedIn, Slack, on a Mac and an iPhone, backing up to a proprietary NAS, operating most things in Amazon's or Microsoft's clouds using managed services that lock me and my clients in to their ecosystems, running default OS on most of everything. The technology choices in my day job are made by whoever has the power to make them, for whatever reasons those people may have -- and "freedom" or even "sustainability" for that matter are pretty low on their list of priorities. The technology decision in my home life come down to "what do I have time and energy to put up with?" and "is there a risk that I'll have to fuss with this in order to make sure it's operational when my wife wants to use it, late at night on some weekend when I'd rather be relaxing?".

Maybe when and if I return to a survival-by-default - when the mortgage is paid and health risks are (well enough) accounted for I'll be able to "model my values", but probably not before then. Even that might require a divorce, in adult life one's motivations and their consequences are not solely one's own to keep.

Aside from that, given the experience I've had with FOSS, at this point I doubt even if I were 100% financially independent and early retired if I'd go back to participating except to go to low effort to upstream fixes to my own problems (here's a patch/pull request, if you don't like how it's indented or documented, that's your problem to solve, not mine). The incentives are all awful with so many volunteers trying to create software for users or use cases that are fantasies, bike shed arguments, corporate interests trying to get their way and take advantage of free labor, corporate leech organizations saving millions in license fees for proprietary software and contributing nothing but sassy bug reports, the folks who are militant and awful to each other about inclusion/exclusion topics, well-meaning but ignorant people who refuse to understand their behaviors and words cause others grief, projects with lack of vision, leaders who are reluctant to lead.

Further aside still, there's a reason normal human beings don't use free software or decentralized whatever and it's because the developers of those things don't have the resources or vision to build software for normal human beings: people who won't edit a config file, won't author content in Markdown, don't want to read a man page of flags to understand the permissions in their chat channel, don't want to have to have a tower PC whirring and heating up a corner somewhere in order to solve what seem to them like simple problems, etc. etc. etc.