The VA now gives disability benefits to all Vietnam Veterans via “presumptive” approval for Agent Orange.
Which means it doesn’t matter whether or not you were exposed. It’s “presumed” you were and a disability rating of some sort (not sure the %) will be paid.
I believe it now also applies to the “blue water Navy” - soldiers who never actually set foot in-country.
The same for PTSD, every one gets it. Lots taking advantage of it too