Celebrating is when a big play matters, one that makes a difference. generally, they would occur late in the 4th quarter, I liked Thurman Thomas. Yeah, he could spike the ball from time to time, but how many times did he simply flip the ball to the ref after scoring? A ton.
Frankly, while obviously admiring the talent and play of Bruce Smith for years, I always hated his sack strut, dance or baseball swing, unless it was again late in the game and a difference maker.
Nothing worse than a tool going nuts when his team is getting hammered, yet it happens all the time. Something has been lost as the generations roll by. It's called "class".