Jeff Mlakar is saying the number of NCIs is too darn high!:
I wish I could say I was exaggerating when I say that I’ve investigated query performance involving 20+ NCI on a single table on more than a few occasions. “Why not?” you may think – the more NCI the better, right? Well think on this:
Click through for the reasoning. You know it’s extra-bad when 95% of those indexes have “dta” in the name. Jeff even calls that out in the post.