Yes, I've seen some people that haven't been indexed after weeks or months, but apparently it only applies to some games (the affected games appear to be random, I don't see clear reasons for games to be indexed in 2 hours vs 1 month). Usually, the answer to these people is either "Please wait" or "I'll let the admins know about your case".
However, my question about the tax interview being a possible problem remains. It makes me worry about my account not meeting some criteria to get a game indexed, even if I waited the required time (getting the "Awaiting moderator approval" when trying to comment also makes me worry about this, although I'm aware many people get this issue and I know it does not belong here. If needed, I'll make a topic about that after waiting).