All the stuff about how bob-ombs have really short lives was great in this way. It doesn't really make sense in a way that's cohesive with an actual world, but as a little vignette in a cartoon comedy game, it added some pretty thought-provoking flavor.
That was weird and depressing though! I actually posted about it on Twitter. Like in the context of the game they're just built for suicide basically? And everyone kind of just accepts it as the way it is? But gets introspective and teary-eyed over it too? Honestly if a theme like this were in some artsy indie game people would be like damnnnnnn that's intense and there would be a million posts about this dark indie game, but it's just popped in the middle of a colorful Mario game so no one is talking about it?!
It gets even weirder in context of this part near the end, where you're in Bowser's ship and fending off the enemy by shooting living Bob-Ombs at them. It's a real-time SHMUP so you probably kill a couple hundred Bob-Ombs in that segment alone. And this is after all of the stuff in the game that made it very clear that they do indeed die. That's the whole tragedy of the Bob-Omb. But now they're your cannon fodder... LITERALLY.
With that said, one comes back as a ghost in the game, so I guess their consciousness just continues in a new form or whatever. In a universe where the afterlife is real, perhaps death isn't that great of a tragedy.
But it's all so strange for a freaking Super Mario game!