We heard this one too many times. This now became “I believe it once I see it” thing.

It does not. It can only block domains. Youtube ads use same domain as actual videos.

Seems like it’s controlled test in different countries and segments. I (Europe) get this popup in Firefox, I also use pi-hole DNS and ublock origin.

Firefox is not immune to this. I get this popup in FF as well, I also use pi-hole DNS and ublock origin.

How was this image generated, is there a tool to make image from post? Also could anyone share original post?