There's a real stigma attached to watching old movies or tv shows
Whenever I bring up an old movie or TV show people will invariably say something like "that was before my time" or "I'm not that old." People don't watch old media and feel the need to distance themselves from those that do. Old books, in my experience, are a different story. You bring up an old book and people will say "I haven't read it" and leave it that. There's almost a begrudging respect for those that read old works. But there's no respect reserved for those that watch old media ... only a need to make that person feel old and out of date.