Web developers stress about browsers and there’s a push from them to have everyone stress about browsers (the whole safari is IE thing) so that they have a convenient excuse for doing less testing. I mean, that’s been web developers for as long as there’s been web development!

Back in the day, developers had to test multiple different browsers and versions of browsers, but they ALWAYS wanted to test for as few as possible (and a large number only wanted to test for IE).
Today, a large number ONLY want to test for chrome, so any difference anyone’s likely to see in browser rendering today is primarily going to be between developers creating chrome specific pages and users not using a chrome based browser.