Not sure if they're the worst ever, but they're pretty dang bad. Unless "cancer awareness" is involved, pink should never be a uniform color in a men's professional sports league (sexist? maybe. but that's how I see it). The regular "Miami Vice" unis are bad—I grew up in the '80s, love a lot of things about that decade, but the color schemes and fashion choices are not among them—but these are worse. It looks like someone spray-painted pink across one half of a blue uniform, or spray-painted blue across one half of a pink uniform.
But then, I already despise the Heat, and this helps me despise them more, so maybe, in a weird way, these unis are a good thing.
Edit: I meant to add that these are right up there (or right
down there) with all of those wretched late-'90s uniforms that had all kinds of oversized graphics and color gradients, like many of the unis in this image:
And since someone else brought up '70s uniforms, I'll add that I much prefer those, as they had many more traditional elements than the late-'90s unis or these "Miami Vice" ones.