A few things are becoming strikingly clear:
1). Eric seems to have a personality disorder which is going to make this process much more difficult than it needs to be. Not trying to insult or be mean, its just something i've observed in watching his other youtube videos and his interactions with people. He talks very highly of himself, claims he knows better than anyone else, and takes criticism extremely harsh. Narcissism is definitely at play here, and the only way to come to an agreement with a narcissist is to agree with them entirely, no compromises. They will always be right. This is important to take into consideration as this whole process unfolds.
2). He doesn't seem to have any meaningful data on his own speakers, other than raw driver measurements that were in-fact not taken by him. Is Eminence okay with Eric passing off their data as his own? They could litigate (sarcasm).
3). I am not sure he really understands audio science. He seems to have a "sound is art" approach to audio, when in fact sound is entirely quantifiable and measurable. Whether some like it or not, you can definitely know how a speaker will sound without listening to it, purely by viewing measurements from something like the Klippel NFS. The key here is that you have to know how to read and interpret the data. While yes some may prefer to have non-linear speakers, the vast majority will appreciate a speaker with very close to a linear sound profile and other attributes like good horizontal and vertical contour plots. The people viewing measurements and making purchasing decisions are definitely not the "sound is art" crowd. There are speakers that cost tens of thousands of dollars that give you snake oil, and then are speakers that cost tens of thousands of dollars that give you solid audio science, ie KEF and Revel.
There is an interesting parallel here with Ascend Acoustics. They had some older, very popular, speakers tested and the subsequent measurements published. They took the criticisms from that and said "we will make it better". And they did, and now their improved V2 measurements were recently released by Amir and look at them, just fantastic. No threats to litigate, no insults being thrown to reviewers and consumers. There is a right way and a wrong way to handle criticism from the community that you intend to sell a product too. I have to wonder, was it Amirs measurements that affected Erics sales numbers, or was it his response to those measurements...