No simple way to block and delete spam in iMessages?
It would appear so. Apple includes simple ways to create name & a photo, share my location (with unidentified contact). If spammer sends message to more than 3 people, I see option "to leave conversation". Hope that is a form of blocking, but if spam is solely to you. can't find easy way to block and/or delete
MacBook Air (M1, 2020)