I own a business and recently had to change all the pictures on my website from webp to png because safari both refuses to render webp and pretends to accept them. I hate it so much and see very real costs in increased bandwith (every image is around 3-4x bigger) but I have no choice because I want people with iphones to be able to buy things from me. Safari is honestly just as bad as chrome but for different reasons (ios safari was arguably the single biggest cause of the death of flash, for example). I also had to go through and fix a few other pseudo css classes that only safari didn't support which was really annoying, what a waste of time.
I don't think many people would consider "Don't use safari" banners a valid option unless the website was somehow really focused on non-apple users or not trying to sell something.
I don't think many people would consider "Don't use safari" banners a valid option unless the website was somehow really focused on non-apple users or not trying to sell something.