Absolutely. That’s what the proposal is all about.
There would be no content moderation forced on anyone. Each user can choose the blocklists they want to utilise including none at all or one they manage themselves.
It’s just a way to allow the community to create an ecosystem of blocklists based on various tags that commonly people want filtered from their feed.
Blocklist providers would be service providers to users, clients and relays so that they don’t have to do duplicate effort in identifying content that will get their relay taken down and/or users to complain about their feed.
If a relay you use uses a blocklist you disagree with then use a relay that uses a different set of blocklists. Or relays that use none at all.