Reversal films have been sliding into oblivion for years, since the 90’s at least. Kodak stopped making the Carousel in 2004 but sales were off long before that. When I was a kid people shot slides of their vacation and the cliches were true, they showed them to people when the returned. By the time I grew up, a stack of 4×5 prints was how people showed off the vacation and now, links on FB.
My slide experience was in HS, where we learned how to process Ektar and mount them but never I really did it afterwards. Still, it’s a sad day for Photography when these fade away.