If you take the article literally, he's asking for the contract to be "restructured", not improved. It mentions "woefully, underpaid", which refers solely to this year.
Speculating that he wants some of his scheduled 2024 $14m restructured into this year.
Yep the contracts is the contract and was designed as such that he could be cut in 2024 (probably in case of injury or loss of form).
A compromise, if the Cowboys want to keep their top veterans happy is restructure some of the 2024 salary into 2023 and make what's remaining in 2024 subject to fitness.
This isn't a big story, that's why it's come out now.