The TOS is worded broadly enough that, if SE is really motivated, they can pick and choose any number of reasons to ban you. They could attribute it to the compatibility layer you use to run the game or any number of other things.

I really doubt SE would ever do that, however. Just as SE "could" ban you for using FF14 with third party apps like OBS or Discord but that would be mental. What they're focusing on right now are mods and tools visible in videos and streams, and from the lodestone post, they're considering taking more aggressive action against dataminers.

So, you should be safe. But no one's really safe if SE decides they want to go after them - Not only did they write the TOS, they get to interpret it as well. But I can't imagine why SE would go after anyone running FF14 on Linux or the Steam Deck or similar.