Doesn't surprise me at all. The platform upon which the entire web game community was based just disappeared, and "Oh don't worry, here's a radically different

Doesn't surprise me at all. The platform upon which the entire web game community was based just disappeared, and "Oh don't worry, here's a radically different stack with much worse tooling that you can learn to use to continue your low-paying passion-driven job as a web game dev" is a pretty bad pitch. So the artists just left.