I think the difference is in the (perception of) honesty or hypocrisy. If Apple jealously guards details about their hardware and impedes repairs, it's bad but it's expected. If Framework guards details about their hardware and impedes repairs, it's in direct opposition to their claimed mission and the reason people were interested, and it feels like a betrayal. (Obviously this varies; not everyone cares about the same things or to the same degree. But I suspect that's this is where a lot of the dissent comes from.)