not necessarily anything _wrong_ with them, just different approaches for different use-cases, risk and compliance profiles, budgets, etc. In my opinion, they're just not extremely decentralized nor permissionless nor appropriate for very small projects. #grantless / #catallax is composed **purely** of nostr events, there's no platform anywhere.
Angor is cool, just sort of complex, at least compared to basic zaps and a handful of Kinds -

Angor Documentation
Project Creation
A comprehensive guide to creating projects on Angor Platform