Why don't we use awnings anymore (2022)

>and the fabric covering would need to be replaced every 8-10 years depending on exposure and climate.

Absolutely not.

I recently drove past my childhood home. The canvas awnings that were there 30 years ago are still there, and look fine. Almost everything else about the house has changed.

Yeah they will have a longer lifetime than that, at worst they will start to fade with the year. But, that's UV that's hitting a consumable, instead of your house or things inside of it.