They're not that bad. Overstatement.
There aren't any superstars, or sure things. But there certainly are guys with talent. Over the years, tight ends have come from different places. George Kittle, Jack Doyle, Cameron Brate, Delanie Walker, Darren Waller.... all guys off the top of my head that were day two or undrafted that have found success. Find a kid with some talent, then it's up to coaching and opportunity. I dont think you're going to find 10 starting tight ends from this draft, but tjere certainly are guys with talent.