Ok, I just revisited it after a few years, and it seems kinda decent now, altho it's still pretty ugly.
Back when I first tried it when it launched, it was as barebones as it could be. Adding new podcasts sucked, it had no trim silence option, no web app etc. Still tho, Pocket Casts is ahead of it even today.
I never understand why people choose formats meant for local consumption and then use centralized cloud services to consume it. Podcasts aren't the only example. RSS feed readers and git are others. If you want synchronization across devices, then use either a plain cloud storage or something even better - like syncthing.