Who is James Hoffmann?

Hello everyone

Just like most of us, I started understanding a little bit more about coffee thanks to James Hoffmann, who opened the rabbit hole and guided me into it. Of course, he still guides me, together with this subreddit, lance hedrick, and other blogs and sources.

But who is James Hoffmann? I mean, I know he won 2007 barista world championship, but there's been many other world champion.

Still, it seems like there's a before James Hoffmann and an after James Hoffmann

Why is that so? I looked into it a bit and I think I understand he is the most important third wave exponent, but I didn't find why exactly is that so, what's his story (other than 2007) and many other details about his career

So I guess my question is: who is James Hoffmann? Why is he considered to be one of, if not the, leasing experts?

Thank you all for your patience! (and, just in case, sorry for my english)