I'm baffled and confused that he manages to run Figma and work on esbuild at the same time.
Same, hence the (!?). lol
Yup, that's the one! He's also the author of http://madebyevan.com/. I remember seeing that WebGL water experiment many years ago and being blown away. That FSM Designer came in handy for some classes where I had to draw FSMs too.