Couldn't a social media site implement support for custom blocklists or moderators, and have users opt into them? Facebook can have their own Official TM Facebo

Couldn't a social media site implement support for custom blocklists or moderators, and have users opt into them? Facebook can have their own Official TM Facebook Moderation Blocklist, which users can subscribe to and filter out all spam and hate according to Facebook's algorithm. Or users can choose not to and subscribe to someone else's or no blocklist at all. Therefore, there wouldn't be any issue with common carrier status since users can post without being hindered, but other users can tailor their feeds to only see posts they care about.