I can't imagine why he would deserve one, but that's my reaction to a sizeable proportion of the past laureates. I guess he's a less bad choice than some.

And shouldn't Singer have to do something other than, idk, bloviate??

There is no such thing as posthumous Nobel Prize. Once you die you are disqualified. In a couple circumstances individuals didn't receive a prize for this reason when their collaborators did.

@BTE I think that if you are a finalist but then die between when you are selected and when the prize is awarded, they give posthumously: https://www.discovermagazine.com/health/first-posthumous-nobel-awarded
that's why I added the extra year, just in case