I've been running FUTO keyboard so, glass houses and all that. Does Olauncher ask for network? Not even asking was what convinced me that switching keyboards would be OK. I ran KISS launcher before GrapheneOS and generally liked it but it was a bit crashy.

I didn't notice if it asked for network - but that might be an artifact of how it was installed? I installed it from ZapStore. I guess if it had network when I launched it the first time it must have asked, unless I have some defaults set up I am unaware of. it had network and sensors at first and I removed both and it works fine.