You can install and uninstall anything with root privileges. There may be issues with system components, but that doesn’t include stuff from Meta, etc. By the way, GrapheneOS also suffers from critical CVEs—several, in fact—specifically on the devices where GrapheneOS can be installed… Qualcomm and its closed-source drivers, which the GrapheneOS team can’t do anything about. (But strangely enough, grapheneOS only runs on Google phones or devices with Qualcomm chips… The honey tastes so sweet from this honeypot. )