Orion on Mac has many options to block pop-ups that work well, like uBlock Origin. However, on iOS, uBlock Origin is not supported and the built in filter lists don't block pop-ups very well.
I was hoping iOS Orion could adopt the same pop-up blocking feature as Safari as they both use WebKit.
Safari has a feature flag called "verify window.open user gesture" that blocks redirects and pop-ups.
