Every year, macOS and iPadOS look superficially more and more similar, but they remain distinct in their interfaces, features, etc. But the past 15 years have been "we'll be *forced* to only use Apple-vetted software, just like the App Store!"
And yeah, the Gatekeeper mechanism got less straight-forward to get around in macOS 15, but … I don't know, someone will shoot me down for this, but it's been a long 15 years to be an Apple user with all that noise going on around you from people who really don't have the first clue what they're talking about — and on HN, no less.
They can come back to me when what they say actually happens. Until then, fifteen dang years.