The video was displayed as an example of what the OP titled as "wing chun vs muay thai". My comments are based upon wing chun vs muay thai.
Well, that's odd. I don't know the OP's experience, but you should be able to tell Jai wasn't using Wing Chun there.
Video 2 of 5 has been uploaded now, anyway. I don't know why he calls it "Modern Day BeiMo" though. That seems a little more than silly...
Again, no Wing Chun. Looks like he's trying to imitate Mayweather's boxing style.