Indeed, it’s not possible to uninstall default apps yet.
But, if you use the search function on this forum and type “Road Map” you’ll see this:
It’s from Nov, 19, and in this article, @GaelDuval (the man behind the idea) states
One of the biggest new features we want to add in 2020 is the capability for users to uninstall most of the pre-installed applications.
/e/ is a work in progress and your concerns are theirs too, as it seems.
Have some faith and patience 