They just want to wash their hands on this kind of thing, If anything happens with this Apps or someone will get scam with some big amount of cash and the Apps has anything to do about it, Google play store will also be featured. because they got those apps from them. this is not just a random removal they think about getting rid of these apps in their play store with some consultations of their advisers.
This is possible. But I think they have always been screening apps admitted on Google Playstore. Not every app can enter there because it has to be checked for possible virus injections. Google has also a policy not to admit crypto mining apps. That is supposedly the reason why metamask is blocked.