I use safari regularly and it has not really kept up. All kinds of stuff that is partly broken for rendering. Especially on heavily dynamic sites. Chrome at least works for any web standard which IE did not.
Where do you run in to this? I switched from Chrome to Safari about 5 years ago and can count the number of websites I’ve had issues with on one hand, I think.
I have never cursed at a website for a rendering issue.
I have cursed too many websites to count because of their broken form designs (like assuming a particular postcode format) or reliance on cookies from ad vendors for basic functionality. If your website needs to generate “a new google recaptcha cookie” (whatever that means) before I can enter payment info, then sorry, no es bueno.