I do think you have to acknowledge your own biases when it comes to childhood nostalgia content, so I agree with the premise raised in this thread that the recent focus on OT content is targeted at the middle-aged.
I see a similar phenomenon when it comes to twenty/thirty-somethings and Harry Potter.
I read the books as an adult, watched the films, seemed entertaining enough. But to people who grew up with Harry Potter in their childhood, it's a whole different experience for them.
They watch Harry Potter marathons every year at Christmas as part of an annual tradition, they dress their kids up in robes and assign them to Houses.
I'm a bit bemused by it, but I totally understand it as there's always going to be something that applies to virtually every generation.
I play on a co-ed soccer team with a very wide age range, and when Alan Rickman died, the young folks couldn't believe that "Professor Snape" was gone, when he'll always be Hans Gruber or maybe the Sheriff of Nottingham to me.