to truly be a "dying hobby" it would have to not be possible to buy model kits
and that is clearly not the case,,,,,,,,this hobby can last about 20 years after the last new kit is sold (due to some of the people with stashes)
the hobby is not and has never been "alive" just because I can buy my favorite aircraft,,,,we once went through a good long dry spell in new kit releases, and the "hobby is dying" cries were heard,,,,,but, then, 5 or 6 new paint companies game along (they're over 20 of those alone, today), and companies that had "only" been re-releasing kits began to give us new releases, and here we are today
as of today, we have more kits currently being sold than ever before (don't misquote that as "new toolings"), I mean the list of different kits that is available for purchase is longer than ever before (yes, I included the "discontinued" items)
add in the possibility of using this new fangled internet deal to find a kit you missed in 1973 from some online friend or vendor,,,,,,and you can get almost anything ever produced in plastic,,,,with a small amount of mouse and keyboard time
a dead hobby would be something that a person can't decide to do for the first time and get all the items needed to do it,,,,,,,,,plastic modeling doesn't even come close to being in that dire shape
Rex