I’m sorry but this sounds very made up.
I’ve scrolled through the entire dungeon section and found exactly one advertisement. During prime time on horde.
To have a direct comparison:
A somewhat older post where people posted screenshots of their group finder.
To be frank: The only reason you see no difference is because you haven’t had a direct comparison, or even worse, subconsciously refuse to see the very obvious difference.
We all know vocal people didn’t like the change that was made, but it did most definitely reduce the amount of advertisements in the LFG section.
Did it entirely remove them? No.
Was it the perfect solution? Also no.
But did it help? Yes it did.
So please, don’t make up stories about not seeing any difference when the difference is so blatantly obvious.