I do this too. The only downside seems to be that I get caught in recaptchas constantly now. Google seems to know how to make tracker avoidance painful enough that I doubt most would follow through with it after a few weeks.
And I guess it will only be a matter of time before robots will start doing this too, so please don't tell anyone ;-)
They always seem to make me "play" their stupid "find the cars" game a lot longer when I quickly choose them. 20 minutes straight one time. Yeah I felt violated. It was on my stupid state unemployment benefits application page. Talk about being kicked while you're down. Not only do I have to convince the state I'm a citizen and eligible, I have to convince google I'm not a robot first.
That's probably a natural side-effect. I don't notice because, personally, when I'm presented with a captcha I usually just move on and make a mental note to not use that site anymore.
problem is im sure they use captcha for fingerprinting too (and google fonts but that's a whole other can of worms)