[labawi]

Seems like a weak excuse.

I mean sure, you could do that, but it would be complicated, conspicuous, tiring for the user and you would still only get one-sided occasional transfer. It could exfiltrate data, albeit suspiciously, but it wouldn't work for ads .. which are the likely motivating factor.

Other motivating factor may be tracking, which google and vendors want to do, but I'm not sure what the stance would be on others tracking their users.