Whatever you think uBlock Origin is doing; it‘s most likely just the built-in Orion ad-blocking.

While uBlock Origin can be installed in Orion on iOS just fine, it remains non-functional.

As discussed before, I find this to be false advertising by Kagi: https://news.ycombinator.com/item?id=48476448

Next best thing for me is using Safari with uBlock Origin Lite, which actually works.