They're not really comparable.

Ka-Block actually advertises itself as being less effective than uBO. It's selling point is that it's a simpler extension that blocks fewer ads and trackers, under the assumption that this is good enough and on it'll on average be faster because of the reduced overhead.

> Some ads will get through this filter, and that's ok. We already have extensions that block every ad that's ever appeared on the web with a completionist zeal that must be admired.[0]

If you're blocking ads just to make pages load faster, Ka-Block is probably fine. If your primary goal is to protect your privacy, you shouldn't be using Ka-Block.

[0]: https://github.com/dgraham/Ka-Block

For privacy concerns, I would imagine that preventing the methods of tracking is much safer and more effective in the long-run than blocking the trackers themselves. Apple seems to be pushing pretty heavily on that front.

Definitely agreed. But nobody (including Apple) is going to pull that off for a pretty long while.

In the meantime, it's useful to be able to do things like block all third-party AJAX requests and whitelist them on the fly on a per-site basis, or intercept CDN requests for common libraries and redirect them to locally hosted versions.

Extensions like UBlock Origin may be a band-aide, but sometimes band-aides are useful if you're waiting for an open wound to heal. In the same way, when I give people privacy advice, I'm optimizing for things they can do right now.