Lower skill ceiling. One option can be done by pretty much anyone at a high volume output, the other would require a lot training and are not available for your average basement dweller.
Good luck trying to regulate it though, Pandora's box is opened and you won't be able to stop the FOSS community from working on the tech.
The team is fairly unison in wanting to avoid defederation as much as possible and leave it users to filter out content they personally don't enjoy. Programming is a big and diverse field, and we want to make it as open as possible to everyone. Unless the instance breaks our own rules as described in the sidebar under "federation rules", I feel like it would be an overreach by us to defederate an instance due to personal opinion.