I don't think this was the author's intention, but I consider this a strawman argument: https://hugotunius.se/2025/08/31/what-every-argument-about-sideloading-gets-wrong.html
We already have well-documented hardware (e.g. PinePhone) and FLOSS software on mobile devices is, 10+ years later, utterly irrelevant in the market.
None of the issues here are technical, they all stem from legal/policy shortcomings.
What we need: legally compelled documentation from chip/device makers, legally mandated unlocked bootloaders, and legally enshrined rights to sideload applications on operating systems (Windows, macOS, iOS, and Android). Even, and especially, if the companies selling devices and developing the OS object.
What we have: none of that.
Until then, anyone from the EU claiming to support the right to repair or regional autonomy is just blowing smoke while the industry lobbyists buy them lunch.
All the major desktop and mobile operating systems are developed by American companies (Microsoft, Apple, Google), running on devices manufactured in Asia, with chips from American or Asian companies.