Here's my take on it.
It's a spinning hard media disc that has a non-digital sound to it ... analog artifacts that would be appealing to those who never experienced it.
There are many video's on YouTube that got a lot of hits which show a turntable spinning a record... young folk find it fascinating ... most were not raised w/ it.
Many don't even mind surface noise and think it's cool. I once gave a perfect copy of Steve Miller's The Joker and a young co-worker (I gave it too) remarked that it did not sound like a record ... pop's, clicks, crackle ... etc ... which he enjoys. He just uses the product different than I would ... I prefer dead quiet vinyl.
Also some young people like to shop or browse a record store just like the generation before ... it's an experience that you can't get with a click click device. It's physical activity, ritual or fun thing to do.
Think of it this way ... how would you explain stocks of $20 to $50 + LPs with stack of Crosley TT's next to it?
Now I said some ... I've talked to young people (not many) who were into the sound of vinyl.
Recent rise in TT solely due to young demographic .... no ...however lately I"m the old man in the record store ... a record store I visit a couple times a year .... gave me discount because the owner said "we don't get many gray hairs in here anymore".