rant: I've learned, excluding microcontrollers such as the wonderful rp2040, every ARM & RISC-V SBC I've been interested in purchasing relies on some extremely proprietary and paranoid bits. If the device has a massive, undying following, like the Raspberry Pi, people will find a way to bring it into the future and keep it useful. If not, well, in as little as a year or so the manufacturer will likely simply tell you to buy the new one.

Truly useful, truly open hardware, cannot exist under current market conditions, for one reason or another. For now, we're all stuck with defaults; despite all of our progress, every computer you can imagine primarily using relies on someone's monopoly, and I imagine there is a nonzero amount of wealthy, powerful people who do not want this arrangement to change.