Could have fooled me, because I have maybe half a dozen Android installs on devices that run all the same applications and are functionally identical to any manufacturer version out there without being related to them at all.
???
there is no major concern for most people about where their Android build is sourced as long as it runs Android apps.
And that's not my point at all. As I mentioned earlier, I only mentioned Android because it's the only mainstream mobile OS which allows sideload apps and has alternative app store. Whether Android in itself is opensource or not is irrelevant in this context, when I'm discussing specifically about Android apps, as an example. Also, I never claimed it was a concern for "most" people, and again, that's besides the point.
the open source "world" is not dictated by being built on open source code and instead dictated by a label of purity based on the lack of proprietary, monetized or closed source portions then... yeah, that's annoying. It's computer veganism
Actually, it isn't. It (the motivation for opensource) has nothing to do any of the things you mentioned, but more about transparency and control for end users (and faster development lifecycles for developers). As I've repeatedly mentioned, people are increasingly getting sick of their apps being filled with ads and trackers and all the corporate spying and data harvesting, and the general enshittification of services. Which is one of the factors driving end users seeking out opensource software.