But you can still grab all the bounties, you just have to make trips to the tower over and over again. Oh and if you have exotic bounties to finish like I do? I've only got 3 open bounty slots because of those.
Bungie clearly designed this game with tiny inconvenient caps on things to force you to play longer.
Normally I try and believe in incompetence before malevolence.
....but not this time, it really does feel intentional in some places.