What? This has nothing to do with that. This would allow users to install web browsers that aren’t just a different UI over the same WebKit engine used in Safari in the event that — due to Apple’s error or a developer’s — a website doesn’t work correctly in WebKit.And we are returning to the old phone days where cell companies had a ton of junk apps on your phone that you couldn't get rid of.
As a web developer, WebKit tends to be the biggest thorn in my side because it has a number of unexplained and, in my opinion, inexplicable quirks that break things which work without issue in all other browsers. Just this week at work, we ran into an issue because either Safari or WebKit sometimes doesn’t use the same protocol as the requesting page when loading a resource via a relative path, which was subsequently leading to CORS issues. There are also cases where things break on Safari on iOS but not macOS, or vice-versa. (And no, none of this has anything to do with tracking prevention.)
Never mind that, while I personally prefer to do my work on a Mac anyway, we have to have Macs on hand to test this stuff because Safari is on macOS only.