Possibly... but someone out there will most likely collect and love bikes from the "good old 2010's" as well.
Similar was discussed recently in a thread which started based on classic cars or rather the interest towards them and in parallel the classic bike topic was on tap for sure..
I think, there will always be a group interested in C&V, and obviously the bigger part of that group will always be on the "closer to today but classic" side...
Without brands and some unique instant classic models, the newer bikes (almost) always brought in some factors which makes them usable as well, not just collectible. And yes, I don't forget, that we are more than enough people on this forum actually riding our bikes but we shouldn't forget as well the most of were born in a mostly mechanical world whereas today's kids not (I'm not talking families but the whole world around them).