What a bullshit statement that has no basis in reality. I wish high-visibility "thought leaders" would stop spewing this bullshit (but they won't)
Safari is definitely not choking the web platform to death. It's as lively as ever.
What you want is a bunch of Chrome-only non-standards that both Safari and Mozilla vehemently oppose to, and a smattering of other bullshit features under the PWA banner that are coming to the next versions of Safari.