Smash Bros is the most appropriate game to have stage hazards, because you have full platforming controls that work independently of an opponent, but the problem with hazards is, if they're overemphasized, the focus of the match shifts from fighting each other to avoiding hazards. This is the problem with a LOT of smash bros stages, like 75m, Port Town Aero Drive, Mushroomy Kingdom, Flat Zone, Green Hill Zone, Summit, Distant Planet, Big Blue, Warioware, Brinstar Depths, Mushroom Kingdom 2, Green Greens, Infinite Glacier, Rumble Falls, and a bunch of others.
It's sort of nice when the hazards are avoidable, when they don't dominate the entire screen, and they don't change the flow of the flight to being about just avoiding the giant wave of lava coming at you, but a lot of smash bros hazards are not this way. And honestly, most players don't really want to put up with that, they'd rather focus on the fight, than having success largely determined by a 1-player interaction like avoiding hazards. Even things like Whispy blowing wind on Dreamland 64 interferes with the fight in a destructive way.
Having totally static hazards might work better, but it's kind of untested territory, and I can see it detracting from the match in much the same way.