Unfortunately, i find it hard in this day and age to find a hardware manufacturer that's not abusive. Do you know of a hardware manufacturer that has a reasonable warranty policy, makes it easy to repair the hardware (no screws or standard screws, definitely no glue), publishes datasheets (specs) and does not lock the bootloader?
I think when it comes to mobile phones, Fairphone Librem and Pinephone are the only three that get close, but none of them checks all the boxes. I'm all ears for suggestions, whether it's for phones, networking equipment, or whatever.