Dev here. Any adult game (if tagged appropriately and marked as adult on the edit, which we have to do) is currently blocked from showing up in search results. The sole communication we've had from itch.io as a community is Leafo posting a saluting emoji with no further context.
Needless to say, a lot of people are upset and worried right now.
It does seem that a number of games are currently being suspended, but so far - as much as we can tell - they're all games tagged with 'incest'. This heavily links the current actions to the same thing that happened to Steam last week.
It is unusual timing given the supposed 'activation' of the UK's Online Safety Bill requirements coming up on Friday, but that is likely unrelated given the above (and given that this is global).