Yeah, I still have my plasma TV from 2011 (hey, the thing refuses to die, OK!). When I bought it, it was a "smart tv". Now, there's no apps for the thing. But I use a fire TV stick with side-loaded extra apps and it's like having a modern smart TV.
I don't think I'd buy a TV for its smart features ever. Far better to get a TV for the picture quality and what actually matters in a TV and use devices to fill in the rest. Sure if they're there and working I'd use them perhaps. But, I know they will become obsolete too soon.