There are no news here. Ad blockers were never allowed to Play store, here is the relevant policy: https://support.google.com/googleplay/android-developer/answ...
This is exactly why AdGuard ad blocker is not distributed via play store. It was removed in 2014, we learned the lesson and see no reason in trying to abuse Google’s non-existent review process.
Interestingly enough, at first Google used a different rule, some vague stuff about interfering with networks. Later they reworked the rule and added ad blocking to examples of common violations.
Anyways, at least Google allows sideloading so devs can live without Google Play. When Apple pulls something like that we have no choice.