Unfortunately I noticed these cases too but the reason why so many give up so easily is either because the system is not so friendly and it takes a while to learn how things work (I still learn by myself too), while the other reason might be because they expect to get rich over the night and that's it. But when they see this is not happening, they just leave.
Which is sort of ironical considering that they join hive in 2022 and not 4-5 years ago when everything was a lot harder from the single thing of getting exposure because communities didn't exist, to the places from where you could learn how things work. Now the whole chain did advance and there are plenty of guides which teach them what to do step by step, but again, it depends a lot on what their real intentions are.
The system is indeed complex and takes time to learn but on the other hand this is the price to pay for owning your content and wallet. DIY is never easy, no matter if it's banking or crocheting. But once you learn it, you benefit from it.
Basically those who leave are not ready for the task and will be back later.
Indeed Hive is more organized and easier to navigate through if you take a little time to learn.