Well, Dan Gryder claims, and substantiates his claim in a recent YouTube video, that
- The latest (and several other before) VRS-related accidents are not caused by
inadvertent entry into VRS but by people
voluntarily going out to practise VRS recovery in flight.
- And that those people practising VRS recovery put themselves into full VRS, which directly or indirectly (eg, inappropriate control inputs) led to the accidents that he discusses (including the Miami Bell 429 EMS / training accident).
- That the high publicity around the Vuichard recovery technique (as promoted since 2017 in every Heli-Expo, also officially adopted by Robinson, and via Tim Tucker's efforts included in the FAA helicopter syllabus) and the premise that it is easy to use this technique to deal with incipient VRS, have triggered the wide-spread practising of VRS recovery across all areas of ab initio and recurrent training.
According to Dan Gryder, the NTSB misread a 2017 Bell 407 VRS accident, assuming that it was caused by
inadvertent entry into VRS, whereby possibly the two pilots went out - only a few days after having attended Claude Vuichard's seminar at Heli-Expo 2017 - to
practise VRS recovery in flight on their own.
Most importantly, the NTSB - believing that lack of training in dealing with VRS contributed to the accident - then proceeded to formally recommending more and frequent VRS recovery training across the board. In other words that the cure that the NTSB recommends (frequent VRS recovery training) in itself is the cause for the VRS-related accidents.