alt Hacker NewsThe article is about how Apple is underdelivering in browser features and compatibility while pretending they aren't. It's about Apple. Apple. The ones responsible for a great many features not being supported in all browsers.
What does a web dev have to do with Apple's choice? How do you improve Safari by not using features it doesn't support? What does your comment have to do with the argument the article is making?
And since outside the EU, all alternative browsers on iOS/iPadOS are just rebadged Safari, this degrades the Web on those platforms. Not entirely coincidentally, Apple has a strong incentive to encourage native apps over web ones.