I have zero concerns about the ethics of using GA. Literally none.
It's free and it's awesome.
I installed Plausible Analytics.
It. Is. Amazing.
I have absolutely no affiliation with Plausible but I do know that it's maker @markosaric is a fellow Indie Hacker.
I feel like I've had my eyes opened to the cognitive overload that is Google Analytics. The ONLY reason I am now keeping it around is for click tracking / events. I reluctantly check google analytics when something crops up that I feel I need to check, however I've been looking at my Plausible dashboard all day simply because it's delightful.
In many ways I'm extremely envious of the Plausible founders because I really think they're onto something here.
Anyway if you hadn't gathered already... I recommend it.
Google analytics is now gone from SongBox