disconnect-tracking-protection VS orb

Right, but Firefox’s ETP blocks Statcounter’s JS (see https://github.com/disconnectme/disconnect-tracking-protecti... which is where, I believe, Mozilla source their ETP blocklist from).

Is there a particular reason portmaster uses the depricated and unofficial Disconnect.me Ad Domains (DM-AD) found at https://s3.amazonaws.com/lists.disconnect.me/simple_ad.txt rather than the official up-to-date list found at https://github.com/disconnectme/disconnect-tracking-protection/blob/master/services.json ?

You're wrong. People have noticed that they use Whiteops (now called HUMAN Security) browser fingerprinting.

The lists are part of an open source project that can be found on Github.

Like Microsoft Edge has shared that they use Disconnect's list. Which list is being used by Brave?

However the ultimate proof that it’s effective is that advertisers use it: a quarter of the top 10,000 websites globally use fingerprinting (https://www.zdnet.com/article/a-quarter-of-the-alexa-top-10k-websites-are-using-browser-fingerprinting-scripts/) and basically every company you’ve heard of uses it: https://github.com/disconnectme/disconnect-tracking-protection/blob/master/descriptions.md

Firefox Focus is based on the Mozilla/Firefox/Disconnect tracking block-lists. (https://github.com/disconnectme/disconnect-tracking-protection)

Edge and Firefox use lists provided by Disconnect. I find it quite lacking. If you take a look at their GitHub, it's only occasionaly updated and there's a lot of ignored open issues.

I see what you're saying. I don't expect that will have much, if any, effect. First, their block list is limited: https://github.com/disconnectme/disconnect-tracking-protection/blob/master/services.json

Does anyone understand the Opaque Response Blocking feature? I'm not grokking the explainer for it. https://github.com/annevk/orb