the whole "overlanding" thing is just like any other idea or concept that is out there...be it the transgender movement, veganism, liberalism, electric vehicles or a billion other things. once something gains some social attention and starts drawing a crowd...that is when things get interesting...
like the saying goes: "Nothing attracts a crowd, like a crowd." meaning that once somethings gains a little popularity, people see that and want to join in and you get a lot of "members" that are more or less attracted to the crowd rather than the actual thing. then spawning out of the newly formed group, you get the "gatekeepers" that seize the concept that is already there and tend to hijack it by setting their rules and definitions and demanding others follow in order to be in the club. soon, the gatekeeping turns into the weird liberal self righteous thing where they turn and start attacking fellow members by harshly judging and pointing out wrong doings...such as having a different opinion or using the wrong word in a post. (this faction usually ends up eating itself as it steadily invents new things to get offended over, ultimately driving away even its own like minded drones) now this will of course cause some problems and create infighting. while this is happening, a lot of folk end up just being bystanders and simply continue to watch quietly, enjoying the show briefly and then inevitably moving on. then of course you have the small core group that are actually in it in a genuine capacity and pretty much go about business ignoring the fray. there will always be a core group, and because of that, nothing will ever completely die off...
so, in conclusion...depending on what group you fall into depends on whether or not this idea or concept appears to be dying to you...