In particular, the UX is a mess. It is very hard for a beginner and frankly it feels like you are in an escape room whenever you want to do something new in terms of difficulty.
Once you are over that hump and just internalize its warts, it is AMAZING, but it IS a huge hurdle for a lot of people.
The people who hunt for alternatives are probably procrastinating, and the people who write their own apps are definitely yak shaving.
Also "half an hour" != "slow learner", everything depends on the quantity, the difficulty and the chosen desired retention.