Bullshit.
First stop blocking iOS pwas from simply installing to the home screen, and don't clear out data in 7 days. Then we'll talk about your browser being better.
100% this. And in case you missed the Scooby Doo episode... Chrome on mobile iOS is just Safari in a ski mask!
This is a bit of a chicken and egg, but the number of iOS users who have saved a web app or PWA to their home screen is probably in the single-digits worldwide. Half-joking.
People are just not aware that this is a thing, and when they learn it's a thing, they don't want to do it.