Or maybe plugging into graphene agps/proxy that supposedly strips imei information (but of course they would get it, so not sure if good idea, maybe worth looking into setting up a similar agps proxy is worthwhile)
Edit: there was a talk about this on fosdem FOSDEM 2025 - OpenAGPS - Open source GNSS Assistance but iirc it’s not yet ready for primetime, still something that might get even a grant from EU for 1 developer salary for a month or two lol, wanna increase your monthly sub to $6 for EU based faster and privacy preserving gps fix? Opportunities to cash in are endless