The forum is a product and one many of us pay for. it is therefore fair that people raise challenge. It is however something that is run by members of our community, real life humans who ride bikes. It is not Facebook or Google, perhaps try to keep that in mind when raising these complaints.
I have previously complained about the forum but, as I said above, with a subscription and bookmark set to log in page I have absolutely no issues with ads or pop ups on any device, any platform or any browser. Perhaps I am just lucky.