PS. GNOME Web could have changed the default blockers but chose not to due to aesthetic reasons (“does not block YouTube ads”). Guess what? If you’re on YouTube, you’re already being tracked (and I’d love to know how AdBlock plus – which gets paid by Google and others to not block their trackers – blocks YouTube ads using WebKit Content Blocking Rules).
https://gitlab.gnome.org/GNOME/epiphany/issues/77
If they start caring about your privacy, they can do so by changing a single line in their codebase.