Regardless of whether or not you believe the 2018 statement, it's plausible at the very least. Yet I find myself observing people being overly caught up in past advice, even when the entire ecosystem has evolved around that specific advice.
25 percent of teams still support IE 10 and under!! I'm all for browser support but this is about 0.5% of browser activity being supported by 25% of teams! This is absolutely bonkers to me. There are a lot of use cases that could mandate supporting these old browsers, but I am certain it is not 25% of cases.