I cannot speak for Stallman, I don't like to associate software/hardware to
'does Stallman run X?' - it makes the movement more a cult that worships
certain people rather than the work and philosophy that is present.
If I was offered a choice of Intel/AMD X86 systems OR lowRISC then I would
choose lowRISC. That said it would only be because it is the lesser of two
evils.
Remember the lesser of two evils, is still evil.
We should be moving towards, total solutions not just another band aid
solution because it is easier.
I push for total software freedom, not just good enough like many open source
groups do. It should be the same for hardware.