Revolut recently banned using GrapheneOS without any justification. They're falsely claiming to do be doing it for security reasons. In reality, they're enforcing licensing Google Play. Revolut doesn't enforce security standards. It runs on Android 9 with no patches since 2018.
Mine is “hence why,” I become irrationally irritated when I see it, but try to harbor no malice towards people I see using it.
Irregardless, we all have our peeves and foibles