Might give it a test sometime.
But can Percona write up official docs on uninstalling DBaaS
How to uninstall DBaaS? COREOS/OLM etc - this was linked (Uninstall Percona Everest - Percona Everest) but it is not exactly comparable for DBaaS. Especially important if you want people to move over to Everest in future from PMM/DBaaS.