What makes you think that the players want a reduced UFA age? THey have yet to ask for it in any of their formal or follow-up proposals.
It is the owners who want a lowered UFA age to get the bigger stars to the bigger markets while they are still in their prime. Let's face it, NEW YORK doesn't want to wait 6 years to rebuild their team all the way back up. They also dont want to be stuck bidding on stars that are past their prime.
I see nothing in the owners proposal (they haven't even made a formal proposal yet have they?) that will benefit the fans in any way, unless you like watching franchise values for the owners sky rocket...