I think that's a bit short sighted GF. Clearly he is here representing the interests of his company and has been reasonably upfront about that, or else he wouldn't have bothered getting a 'company account'. I also don't really see any issue with him having conviction in his understanding of Wyckoff and don't see that it implies that Jako's is wrong or less valuable.
Whilst his initial post was somewhat abrupt he has engaged with Jako and he has actually provided some decent information on those indicators and their implementation and I am quite intrigued by it and can see how they can add value. As I understand it, successful implementation of VSA/Wyckoff theory requires you to interpret the volume/spread action within the context of previous price action. The indicators add to this context with a quantitative element, and seem to complement the theory we are already familiar with.