I would love to read the rants if you can find them. I was really considering getting some RK3588 based boards since it seems to be the most powerful ARM based SoC you can actually buy.
Glance through the Radxa and orange pi forums; there are plenty of growing pains still at this point, from power issues, Imagination GPU lacking support in Linux, and mostly other hardware/driver related quirks that will take time to sort out.
For some use cases they're great though, as long as you don't need specific features.
For some use cases they're great though, as long as you don't need specific features.