My personal experience with ad blocking on iOS is that it’s both far less effective overall than ublock origin, and still manages to break a lot more sites. I have 0 tolerance for ads though- so even a 99% success rate on a site is unacceptable to me and I’ll just not use that site on my phone. Maybe 2/3rds of sites fail by that criteria for me. If ublock origin on my desktop computer also fails, then I don’t use the site at all- but that’s a vanishingly rate occurrence.