They might have banned those but not for long. Even Cher has claimed that "If I Could Turn Back Time" was the first music video banned by MTV but how long did that last? Not too long. At some point they did put it on in the evening hours. The reasoning being all because of her skimpy-ass clothing which was one of the highlights of my life as far as I'm concerned thank you very much.
The real question is how well did the reunion tour in the U.S. help Queen's popularity? I would say what it has done is more or less solidify their reputation as much as anything else. Of course there is a difference in popularity and who actually sells records and or tickets. So I don't know.