I wouldn’t call them different browsers, more like skins or “chrome”. All iOS browsers are built on Apple WebKit. This essentially makes all of the browsers you listed reskinned versions of Safari.
Sure they may have some clever UI, accessibility, or platform specific functionality. But they are nothing like any of those browsers on other operating systems.
I described it that way because the content morphed several times moments after the blog post went up, and appeared fully automated.
Perhaps a human reviewed it and updated it after the fact, but I’d be shocked if the original post I saw wasn’t AI.
In case anyone wants to skip the weird ai content blog
Here is the source: react.dev/…/critical-security-vulnerability-in-re…