Really makes me wonder what flight strip Center was looking at as compared to what the cab and TRACON had, especially given that the new routing doesn't appear to have been followed. Sure sounds like somebody dropped the ball given Center's initial (and subsequent?) confusion.
The only thing I can think of for this was the metering for the weather delay that the NY area is having. KEWR and KJFK both have 2 hour 15 minute delays coming in and out.
Looking at the preferred IFR routes from the FAA
(page 401), the preferred route for KLAX-KEWR is SID DAG J100 0BH J10 IOW J60 JOT J146 GIJ J554 CRL J584 SLT FQM–STAR
So giving them the reroute would have to pretty much be for weather, which they probably were rerouted again after DRK, which turns out to be the case.
Random question... why the heck would you read out "MEM.J42.BNA.J42.BKW.J42.GVE" rather than "MEM.J42.GVE" ?
good question. No real need for that type of read out on the clearance.