When I was still doing web development, I developed Safari-first (our target market was on Macs anyway), and then tested in Chrome later, and I would always run into issues like the one in this blog where adding a border-radius broke something, or if you did this specific thing, scrolling slowed down to a crawl. So I always thought it was weird when people complained that Safari was the buggy one holding the web back…
Google also built superior dev tools into Chrome in many respects. Lastly, many developers don’t or won’t ever read W3C/WhatWG/TC39/IETF specs or peruse browser bug trackers beyond solving the immediate problem they’re faced with, so blame can often be very arbitrary.