I mentioned this in another thread, but this only applies to their "Team Pixel" ambassador program. Those aren't actual reviewers, they're contracted by Google's PR firm, specifically to promote their product line. They're not coming after MKBHD and the likes with this. This is just part of their sponsorship agreement.
Worst case scenario in this situation is a few lifestyle vloggers will stop getting free phones.
I don't like that this is the way things are (in relation to influencers) but it seems reasonable to me that if you sign up to shill for a company, you should be expected to shill for the company.