The guy at the centre of much of this drama has stepped back, and is letting the GrapheneOS foundation take the lead. While Daniel clearly has some challenges in the people skills department, I think Louis may have over-reacted a little in his video when he claimed that Daniel might at some point act in bad faith.
Is there a safe way to try it and revert completely? Banking apps can be very sensitive and those not working is a deal breaker for me. The potential of trying it and them no longer working, even if I change back, worries me...
Unless there are reports of backdoors in Graphene OS I don't see a reason to not use it (well, YMMV if the developer's dialogue affects you - this is the internet bro). I get that Graphene is not the Degoogle expert in Android OS markets (\e\OS for you lot if you don't want to do manual work), but it can be degoogled the same way that Lineage can be degoogled - change the API calls to google servers. That's all of the Google influence these ROMs have.
This OS is fantastic and if I were to purchase a pixel I would use it. Absolutely