I'll simply say that if you bothered reading anything (let alone objectively), you'd clearly see that no one is arguing for a blink monoculture. They're arguing for allowing everyone to choose whichever browser and browser engine that you want. Safari included.
The math isnt mathing on that site... And, no, safari is NOT capable of PWAs - which is the primary point of contention (not obscure APIs, though safari generally lags in all of that as well). They deliberately hobble PWAs and make them very difficult to install.
edit: also, your site is just obviously biased/poorly done, because there exist many better comparisons of web features, which show how vastly far behind Safari is, often even of Firefox. This is unsurprising given your chosen style of rhetoric