I do believe AA has had higher labor costs ever since and maybe before the Crandell years. So this is nothing new.
And that was no problem at all during all those years when AA was able to command very real fare premiums (much higher revenue). Like before WN became a 550-airplane domestic competitor. Like before all the legacy competition went thru Ch 11 to screw their employees and reduce their labor costs to levels below AA. Like before non-union B6 became a 200-airplane competitor with very low labor costs compared to AA and focused on AA's transcons and the Caribbean. Like before Carty and low-cost Virgin America took aim at AA's transcons and ORD and DFW. The places AA used to print money.
Not to repeat WT's oft-repeated posts, but AA is now the high-cost airline, and sadly, it isn't always getting the revenue premiums it used to. And huge raises for the mechanics ain't gonna fix that problem.