[megous]

This is just nonsense. There are plenty of old (6-7 year old boards) very well supported in Linux. I've been using several such boards for that long.

If anything, support gets better with time, usually.

[LeafItAlone]

Which SBCs are you referring to?

[megous]

Many of these https://elixir.bootlin.com/linux/latest/source/arch/arm64/bo... or these https://elixir.bootlin.com/linux/latest/source/arch/arm64/bo... or these https://elixir.bootlin.com/linux/v6.6-rc7/source/arch/arm/bo...

SoC support for Rockchip/Allwinner is usually good, except for the newest SoC, where the support may be lacking in some aspects that may or may not matter to whatever usecase at hand.

Checking the board DT before buying is a good idea, to see what's supported.

I have about 8 differnt Orange/Xunlong and Pine64 SBCs, running for between 7-3 years with continuous mainline Linux updates.