If you care about privacy, this is a terrible take
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For starters the OP is talking about computers not any device. And talking about hardware not software.
Running Linux on M-series is an excellent option and probably superior to running on Intel (as Intel chips after 2017 ship with the Intel ME spyware, but also in terms of performance)
The M-series SoC is very well designed, even for booting other operating systems because of security and verifiability at the firmware level.
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