I don't believe that this is for the better, nor that this is done in good faith to protect users. They already tried to make it mandatory to go through Google, which is a pretty clear hint of their actual goal.
Google pushes the safety narrative, but this also conveniently entrenches Google as the authority over alternatives and hurts not only FOSS, but also competing app stores from other companies like Amazon, Samsung, or whatever Chinese manufacturers.
Obviously we need to find a middle ground between owning the things we purchase, and not owning them. Having access, but making it annoying is a very reasonable option.
In theory you should be able to use bad words in discussion, or a joke. But in reality, this is usually done in bad faith by assholes, because others don't need to. Also, if the audience doesn't know you well enough, it's a bad idea.
Use common sense to judge whether you should. Often the answer is no. I don't even remember an instance where I made such jokes.
Blocking all foreign posts, even on local communities sounds like it might be an unwanted side effect.