At the beginning of the video, Dan Gryder mentions several times that he isn't a helicopter guy and that is blindingly obvious from the rest of the video. He equates settling with power to VRS - something I hope that has been made clear is that they are similar but separate situations that superficially look the same but have different causes.
His assertions that pilots may have been 'experimenting' with VRS recovery, post the fanfares about Vuichard technique, may or may not be valid.
I have said frequently that believing Vuichard will get you out of full VRS is likely to give pilots false confidence - if that false confidence leads to pilots flirting with full VRS instead of just recovering at the incipient stage then Mr Vuichard and Tim Tucker have a lot to answer for.