I see benefits and potential detriments to this: https://bonfirenetworks.org/posts/building-shared-infrastructure-for-the-fediverse/
Obviously, the ability to plug into services that take some of the load off of home servers could help fediverse admins avoid some common problems.
But at the same time, we're talking about interjecting third parties into relationships that have previously been much more direct, and it's reasonable to be concerned about what that might entail. I hope admins will go slow and think through the possibilities.