Al DeAtley was Roger Patterson's brother-in-law; their wives were sisters. He was also a successful construction/concrete mogul in Yakima (I think). He was extremely wealthy compared to Roger and, probably not wanting his wife's sister to want for things, gave Roger a lot of money. Once the P-G film was developed, DeAtley was the brains behind marketing it and making a profit off of it. In his execrable book, The Making of Bigfoot, Greg Long interviews Al DeAtley. Long makes it sound likes he's going in to interview the Godfather and has doubts about whether he'll be swimming with the fishes if he makes the wrong move while talking to DeAtley. Long's book is more about making Greg Long look like a heroic journalist tha
He's posted 30 videos over 2-4 years. I'll defer for a final answer to others, but I don't believe he has any real credibility as a Bigfoot/Sasquatch researcher. Had he not made this set of videos, I don't think anyone on the forums would know his name. And there's a large dose of hypocrisy when he castigates Bill Munns for defending the P-G film "to make money" when this guy blocks some of his videos unless you're supporting him on Patreon so - wait for it - he can make money.