It seems like it can tick many of the boxes for effective long term learning if used properly (including not just surface learning but also deep conceptual understanding). However, my impression is that there is a learning curve and a cost associated to using it consistently, which leads to it not being used as much. Idk. What’s your experience?
I use it quite a bit when I need to study for a cert. Maybe some of the more advanced features have a learning curve but just using it as a flash card system that also syncs up with Ankidroid on my phone was extremely easy to setup and use. The only cost was time to make the cards and the minute or two it took to install.