Contrary to the popular belief, camber don't actually wear tyre down that much or fast. Even at negative 2.5-3, it still won't cause that much of obvious one sided wear lol.

I can assure you that the toe is the culprit here for your case.
The feathered worn pattern shown on the picture is the dead giveaway.

I had the same problem on my Civic's stock tyre as well (Michelin Pilot Preceda)
And this happened after I sent my car to service in Honda Service Center and they asked if I want to do tyre rotation and alignment. Never ever trust any service center to do proper alignment job for you :/ But that's just my opinion.

My car also suffers from this...mine even worst, outer and inner worn off....even I so pump in more and do very regular alignment.

But end of the day, whatever it is, even if it worn evenly, at that state, you still need to change it....dun kid yourself...your tires are bald....change it TODAY!

Nowadays I see tireshop got alignment machine...but actually, do they really know how to do settings?

Tyres last 2 years? I haven't had tyres last more than 1 year in the past 8 years.