I don't buy for a second that guitars are becoming irrelevant due to electronic music rising in popularity nor "kids" not caring about their parents' old gear any longer. Those arguments are overplayed and have been for the past 10-15 years with zero real-world proof to back them up.
The truth is that the guitar market is the LARGEST it has ever been and it's continuing to grow!
Gear from the '70s and '80s that was shunned by mainstream players is cool again and manufacturers have steadily moved into the digital space to accompany that expanding user base of creators who make music from their bedrooms and home studios.
Guitars have become a part of genres that used to be practically anti-guitar and new technologies are emerging all the time which keep it extremely relevant.
"Bands" may be less prominent (not sure if that's actually the case), but band-like entities are finding new ways to collaborate thanks to technology. Check out this incredibly long-distance collaboration by several talented artists, including a great guitarist clearly inspired by John Petrucci. Sure, they have a "band" name, but you'll probably never see them in person! Still great music and full of catchy guitars:
Geez, man, this seems to be your attitude about pretty much everything! I think your gloss should say "Eternal Grumpmaster"!