Microsoft 365 allows admins to set the maximum to 150mb, but it’s rare that anyone would

The meme didn’t mention the play store, anyone actually concerned with this stuff likely also is savvy enough to install apps without the play store.

Is there a similar community here?

No, if he’s not in IT it should not be possible - I don’t know what email system you’re using but this person should not have the access you’re saying they do.

I’m not saying it shouldn’t be technically possible (I’m a sysadmin, I know what’s possible in a corporate environment), I’m saying your organization should not make it possible.

If he’s in some leadership position I’d be looking for other employment and/or reporting that person to your corporate compliance officer if you have one.

That’s insane and should not be possible