I don't think it is. The only one I'd be willing to listen on is Ozzie Newsome, simply because he was such an outlier as a receiving threat when TEs weren't asked to be that, but was still asked to run block. The other tight ends who put up similar receiving numbers, or better, compared to gronk we're not merely as good at the other elements of being a tight end. Tony Gonzalez, Antonio Gates and Shannon Sharpe were basically large, slow WRs