My biggest annoyances with HID-equipment of the past decade were keyboards with firmware bugs (i.e. not accepting key-combos in all orders due to some QA-oversight, not having Home/End on Fn+<Left>/<Right>,...).
Right now I'm writing on a Dell KB7120W which occasionally "forgets" to send the Ctrl-key. Fun times whenever I want to expand a multiselect with additional items in a GUI and I lose the whole selection...
This was exactly my thought too.
Not knocking the self-repair scheme, but in my experience there is quite a disparity between the (relatively high) quality of their hardware - at least with MX mice/keyboards - and the low (IMHO) quality of the firmware and software.
I've never had any Logitech hardware fail but I have spent countless hours trying to fix or workaround their software/firmware.
I've mostly replaced it all with Karabiner and Hammerspoon now, but I still can't actually use my devices to their full capabilities.
I'm not a sufficient keyboard nerd, I just want a compact well-spaced portable keyboard with Bluetooth and multi-device support, possibly also rechargable.
The market is full of such devices at decent pricing, but you need to cope with various firmware bugs which you only find after purchase...
[1] https://zmk.dev/