Yes, Low offset wheels hurt your wheel bearings more than stock.
the center line of the wheel being further from hub creates more stress than the stock offset.
is there “proof” of this? is there some mile marker where your bearings will explode if you run a +30mm offset on a Subaru? No.
Are you causing more stress than factory? Yes.
Will you need to replace them earlier? Yes.
I’m more than willing to read a report from someone who has proof of their broken wheel bearing vs. non broken low offset wheel bearing.
You wont see me wasting time figuring out the actual point of where it happens. Low offset wheels increase wear. Either you accept that or you stay with a higher offset wheel. End of Story.