I don’t know him or the other blanco guy; my only issue with them is the impression they give that aircraft accidents are something that can be solved in prime time 1 hour YouTube episode. As well as some of the analysis I’ve seen in a couple of their videos that had me scratching my head as to what investigative process they used to come to X finding or Y conclusion. As someone who has done more than a few full accident investigations in my time and know the extensive painstaking detail, long analysis time, and intensive effort it takes to not only do these investigations efficiently, but accurately, and with zero inherent bias. Only following the trail that facts and evidence take you, and only drawing conclusions that have evidentiary basis, accepting that some things may never be a known why.