I love Safari as a browser, but I hate the fact that it neuters the web and makes it feel much less powerful. Web Bluetooth and webUSB are ignored by Safari and unsupported. Notification support is lacking last I checked. No PWA functionality to speak of and webNFC won’t be added. Extensions are lacking largely due to being basically native apps that bring with them all the cost and overhead of being such.
As a browser Safari is beautiful (loving the look of it on Big Sur), efficient, lightweight and has a lot of little creature comforts that other browsers can’t or won’t implement because they are Mac specific (keychain, Touch/FaceID, native share sheet, 2fa code reads direct from Messages, etc). But it’s also hard to see a future in a browser that is still stuck in a Web 2.0 philosophy.
The author’s point is good though: Safari is becoming the final bastion of hope against a purely Chromium landscape just by virtue of being an Apple product with an immediately large market share. I hope Apple will use this position of power wisely and help drive browser behavior rather than just being comfortable to exist in their own little world. Wishful thinking, I’m afraid. For Apple Safari seems to be little more than a talking point when advertising MacOS/iOS. It’s just another feature.
For what it’s worth I’ve been really enjoying Vivaldi of late (I have no affiliation with the project, just including for context on my day to day browser).