I faced this from most of the large Canadian rental agencies when I was in that age bracket back in the 2000s - I only found one at the time that would rent to me, and they required the credit card of someone over the age of 25 (which they didn’t tell me until I actually showed up to pick up the vehicle). Things may have changed in the last decade or so but this isn’t something new for Canada.

Huh?? Do I see differently than everyone else? I can definitely still see my one closed eye’s darkness. It’s like a 98% transparent overlay on my open eye’s vision that’s a slightly different colour.