There are a lot of young people for whom these old formats are just a gimmick. I read only today that 21% of vinyl purchasers in the UK don't possess a record player. The recent resurgence in cassettes must be driven even more by people buying just for novelty and not to play.
Aha became famous because of the video to Take On Me. It is one of the most iconic videos of the 80s, in the UK at least. And videos in general are an icon of the 80s. So a VHS does seem like a valid piece of memorabilia. (And PAL because they are European.)
I must admit I have quite a few picture discs I've never played. And don't forget that in a world of downlands and streaming, a lot of people think it's strange that we (QQers) still like to buy such old fashioned things as DVDs and BDs