It's just another declarative adblocker, as that is all Safari (and now Chrome) allows. There's vanishingly little room for differentiation in this space.
That info is outdated. Safari also allows JS scripts running on sites, i.e. extensions working like script injectors. The difference with content blockers is those extensions must be explicitly allowed to access sites being browsed first, for privacy reasons.
Chrome can do that too on desktop, and on iOS Chrome can't run any extensions at all. Safari web extensions have been around since iOS15, so several years now.
