It's the offseason. Snyder and Co. are busy getting ready for the draft in a week and Gordon Hayward is a RFA who is not under contract and not sure where he's going to play next season. The Jazz probably aren't going to set the market for his contract, so he'll be actively pursuing a new team for next season. Then the onus is on the Jazz to match the contract, let him walk for free or work out a S&T for something of quality coming back.
I wouldn't read too much into it. Until he sees how committed Utah is to keeping him, I can understand his wanting to keep his distance. We'll know in a couple of weeks what the true position of both sides is going to be. My guess is that he'll get a good, but not great, contract offer from Phoenix, Boston or the Lakers and that the Jazz will then match that contract. The only other scenario I can see coming out of this is if the Jazz internally decide to see what the S&T would bring back and then only do a deal if it's tilted in their favor. I think that they're pretty happy with just matching the contract to be honest.