Plenty of time... the totalitarian principle of QM notwithstanding, not everything not forbidden is compulsory at a macro level; academia is not a deterministic machine for yielding studies given the appearance of a phenomenon. Otherwise I'd ask you to provide some studies quantifying "plenty of time".
I feel 13 years should at least be producing nonfiction essays or something that passes for journalism. It took 4 years for 5000 trump books to come out. 13 years for the upending of racism towards being against the whites should be plenty, too.
I... can't help but think that, had he been a member of a different demographic, he would have just plain been fired.