Especially if he was receiving any VA or social security benefits it certainly should have been reported if he died, whether it was is another matter.
Requesting the report as next-of-kin on the basis of being a fifth cousin seems rather a stretch, as it would be trivial to find a closer cousin (who, unfortunately, would know less about Mr. Meads than me).
If it was reported I believe he ought to show up in the Social Security Death Index.
He is not, which indicates to me that either, he never got a Social Security Number (is this possible for an American serving in WWII? Maybe, if he never came back and worked in the USA?), his death was never reported to US officials, it hasn't made its way into the public index yet, or he is still living.