Look a lot of this passes the sniff test but anything Younger Dryas related I have to assume based on past performance is all buillshit designed to prop up religious fundamentalists and bodgy history.
There's no link to anything religion wise with the Younger Dryas AFAIK.
My only experience studying it has come from the geological / astrophysics sides though.
I do agree the religious link is weird. The mere presence of a 12800 year timeline contradicts YEC. Then again, that kind of logic doesn't always stop pseudoscience people, especially the more conspiracy-flavored ones.
There are other creationists working on the timescale issue, attacking dating methods etc.
TBH if someone provided evidence of a flood, they would probably just publish bs suggesting the timescale is wrong and push out a bunch of YEC textbooks stating it as evidence of the biblical flood.