What seems to be misunderstood here, is that the OP isn't saying "Oh! Minecraft is dying!" They are saying "Minecraft WON'T die! At least, not for a very, very long time./Minecraft will stay around for a long time, but even when it does die, it's legacy will live on." or something like that.
Side note. In my opinion, is Minecraft dying? Nope.
Well, yeah. Even with that crappy Bedrock/Java split the community's going strong and pumping out texture packs as we speak. Games have lasted longer (Ever check out Doom's modding community?)