I get the daily email summary for CASTREC. I would never dream of putting my own ignorance out there, but I love skimming over it every day. The day in question just got here. Holy sh moley. I have no idea who that guy is, but I would answer the question "who better to conduct Bernstein's music than Bernstein?" with: ANYBODY (not to be confused with Anybodys).
The man was a genius, certainly one of my favorite iconic people of the twentieth century, and there probably are some decent recordings of his out there -- but not of his own musicals. Going as far back as the early 1960s Symphonic Dances, the recordings are enthusiastic as all hell, but sloppy and just kind of all over the place. Other American composers like Gershwiin, for whom you'd think he would have been an ideal interpreter, fared little or no better under his stick.
The magnificent failure of the DGG recording of WSS is endlessly fascinating. DR Elmore fights the good fight.