Here is just one A'goner's viewpoint.
I don't find it at all unusual that OP would put a discussion about a video pertaining to speakers in the amp-preamp section.
The speaker Jay has purchased is beautiful and based on my short audition of the lesser SF Lilium I don't doubt it deserves to be included with others at the top of the food chain.
Jay had one of the most popular threads in A'gon history for years before going "commercial" with his you tube channel.
I have never found him to be abrasive.
I wish him tremendous success; he has worked for it.