I too find all the lights, setting, and confetti, etc., over the top; even Tyra's costumes. But I can understand that they are trying to make up for the lack of an audience, so they try to fill up the visual space and distract from it.
What bothers me the most is the audience noise when there is no audience. Too much, too loud, the boo-ing and the judges' reacting to the boos are too fake.
I realize how challenging it was to set all this up, so I give it them a partial pass. But I would really prefer less distraction and more emphasis on the dancers rather than the environment of the dance.