I originally commented there and expressed how they were underestimating the importance of ad blocking. One of the issues I pointed to as evidence (https://github.com/mozilla-mobile/fenix/issues/96) has since been re-prioritized to Q3.
They seem to have heard the message.
Just because they know how important it is doesn't mean they care.
I'm sure Google also knew how important ad blocking was to many Chrome users when they decided to remove that functionality from their browser, too.
And, yes, there's the "ad blocking" issue: https://github.com/mozilla-mobile/fenix/issues/96
What does it actually say? The requirement is "Integrate/support for different adblock lists (see Focus)".
So you can have certain ad-block lists, but not the actual customization and not uBlock Origin.
> We're certainly aware of how significant ad blocking extensions are. This release required a great quantity of features with only a six month timeline until now.
> We already support a very limited set of the WebExtensions API to offer features like Reader Mode. Rest assured that more features will land in the coming months.
Source: https://news.ycombinator.com/item?id=20298143
This reads like FUD to me. The dev team know how important extensions are to their users.