I get why it may seem that way when we're on HN and there's selection bias going on. But if you look at all major browser the Safari users are going to be the lowest % extension use. That's what Apple is. An ecosystem where users don't configure anything. You can go out of your way and do it but that type of user is not who they design for.
I remember when people said ad blockers we’re going to be broken. And I didn’t notice because the ad blocker I was using before worked fine and continues to work fine after whatever they did. (1Blocker)
Just look at, https://www.zdnet.com/article/apple-neutered-ad-blockers-in-... - The safari userbase either didn't notice or didn't care when it's extension functionality was gimped. And this is not a unique event.