Right now? Yeah, its very easy to do, and there's a download link for it included in GrapheneOS's preinstalled app-store.
I am however worried that eventually Google will make running custom software (apks, alternate firmwares) so difficult that development for those will stop long term.
The sponsors got increasingly stupider too, it started with arms manufacturers, then moved to Coinbase, then UFC, and ultimately (I shit you not) Palantir.
It was hilarious.
Begging for daddy USA to fight the war they started, yet they can't even refrain from murdering helpless starved children in Gaza for a single day to help with the optics.
They do it because the indigenous Palestinians refuse to let Israel expel them from their land. Israel's goal is not killing Arabs, but they are okay with it if it lets them expand their ethnostate.