Well, I am no Chris Tacy, but I'll take the liberty of assuming that his '99%' is code for 'a vast majority' of home baristas. I'll also take the liberty of interpreting that perhaps if you're thinking, "how does this help me?" you might be in that '99th percentile' of home baristas that already got the memo, making you
peers. Of course, there are other possibilities, but I'll leave those as a thought exercise for interested readers. For those that aren't in that group, this is a visually appealing, concise explanation of what makes espresso special, geared at newbies and people who fancy themselves familiar with coffee, but haven't been truly exposed to true specialty coffee.
While such people might be better-advised to read the "Getting Started" section of our
Resources page, this video seems a great place to start to get people interested and clue them in to something better. It seems obvious to me that this kind of thing is really helpful—the sad truth these days it that people don't like to read, and most people find wading through discussion to be tiresome; they even seem to shy away from what I think is
pretty approachable stuff. I'd like to think videos like this could be great stepping stones toward getting deeper into this hobby (maybe to the point of actually reading that long-winded stuff!).
Anyway, that's my take on Chris' comment, and my thoughts really just reflect Jim's
previous comment. If you've been getting your beans over the internet from artisan roasters like Intelligentsia, Square Mile, etc. for a long time, and are also a longtime student of espresso, then this probably isn't going to teach you something new. But that's not to say you shouldn't be able to appreciate it for what it can be to others who aren't so far along, or for how strikingly well-made it is.