They have an official repo. That will fix the problem.
Correct me if this is wrong, but from my understanding switching to their repo means no longer being behind F-Droid's source code match guarantee, or seeing anti-features and all that stuff. Granted, I already gave that up for Bitwarden so I admit it's a bit hypocritical, but much of the value of a centralized F-Droid is the main repo's curation process - circumventing it is a workaround, not a solution.
Edit: I also worry about the possibility - however remote - of downloading new apps thinking they're from the F-Droid repository, when they are in fact from some alternate repository I'm using. I already worry about this with Bitwarden, and each repo I add is another potential vector for this. Perhaps I'm overthinking this, but I'm thinking if too many popular apps make their own F-Droid repos, this might become a real threat.
Even the official repository seems to update a day or so late. Most of the time the in-app updater notifies me about a new version, then I go check fdroid and the update is not yet available there.