It will make it harder for many to hit status, especially those buying very discounted long half tickets.
But as AA matched DL and UA in most parts of this announcement, wonder if and when they will make it possible to earn lifetime status above Platinum - And if they will allow for free AAdvantage changes at the new 75k level. As these changes won't happen until next year we will have time.
As a lifetime Gold, I stopped worrying about AA shenanigans for a while. I've just been whittling down the 1.1 million miles I earned in the "good times" (half-way so far). And having no extra fee for close-in booking has made them very versatile for my uses.