I've asked you quite a few direct questions. Why don't you answer some of them rather than try to spin the narrative?
Dominant is the key point. On a board full of rabid cowboy fans, you would think that most would have realized that he hasn't been dominant in several years. If he were dominant, we could run behind him to get those tough yards. How many years has it been now that we struggle to convert those short yardage situations? How many pancake blocks out of all those snaps? How many "OMG, I can't believe he just did that"? Do you really think a 32 year old offensive linemen is as good as he was when he was 27? So, why would you want to renew a contract paying him as if he is? Which is apparently what he wants. A contract that recognizes reality and doesn't expose the team if it goes south quickly, that we could talk about.
Simple questions like this could help you see things as they really are today, not as they once were.
As for Tyler, he is young, strong, athletic and still looking to prove himself. In other words he still has all the ingredients to have the type season that Zack had when he was that age.