Redundancy in Coformance Classes

[uvoges]

If the conformance class https://api.stacspec.org/v1.0.0/ogcapi-features is mandatory then you are already compliant with OGC API - Features - Part 1, which already regulates the handling of collections (..../collections endpoint..., search on a collection ((/collections /collectionId/items....), why is the specific conformance class STAC API - Collections (https://api.stacspec.org/v1.0.0/collections) still required (which only regulates the handling of collections).

[m-mohr]

It specifies that the client can expect only STAC Collections in the response.