Not too long ago, a couple of dudes on his channel were A/Bing a 100k cable vs some 27 dollar speaker wire from homedepot or something. Both dudes ended up picking the 27 dollar wire (funniest thing i’d seen in a minute...) and Mr. Jay had to come up with some desperate sounding explanation... that the 100k wire didn’t have time to "settle" into his system yet , oh well...
My impression is that Jay’s channel is mainly organized around very very expensive gear; it’s a Lifestyles of the Rich and Famous for audiophiles. If the GR stuff is not in that price category, I would expect that Jay loving it would be off-brand for his channel’s character.