I think the issue is that the system was first designed with some gameplay-altering mechanics in mind (Signature and Class abilities, basically). They developed the software and tools to develop these systems and by the time we get to playtest it, these core systems are effectively set in stone. In a sense, designer’s choice.
And to be honest, most hardcore progression players don’t care about RPG elements. If they feel forced into a choice, the content should still attempt to be fun for them. For the overwhelming majority of players, they just want something fun to do in their spare time. Being able to pick a Covenant and swap easily to a new one will be more than enough. If someone wants to swap back, it’ll be harder, but ultimately, it makes sense.
Towards the end of Beta is when the majority of tuning takes place. What makes you feel they’re giving up?
Explained here 