To the contrary, I find that if I force myself to hold for what seems like an artificially long time, about 2 seconds, my shooting improves. If I've been rushing my last few shots and decide to start forcing myself to hold for 2 seconds, the first couple of shots are probably not going to be very good, because too much of my concentration is going into holding and is not being spread around among the other parts of my shot execution and aiming like it should be. But after I get over that hump and start holding for 2 seconds without undue stress, my shooting is the best that I'm capable of.
Rick Welch stresses the 2 second hold as an integral part of his training. He will stand behind you and say "hold, hold, hold....shoot," until you get the sequence right. He is willing to compromise on many things: grip, anchor, glove or tab, etc., but I don't believe he would be willing to compromise on the 2 second hold, integrated with his dead release. He might be willing to grant that some archers could reach their potentials without a 2 second hold, but I'm pretty sure he would recommend that those people study under someone else, as Rick's method probably wouldn't help them.
I'm by no means an expert, and am content if I place well in my old farts' category in the tournaments I enter, but after experimenting with many different methods, that's what works for me.