It says "Usage of Chaosnet presumably waned as Lisp machines became less and less popular." That's basically true, but there was substantial Chaosnet usage from multi-user machines (e.g., UNIX, VMS, TOPS-20). Once you had a Sun-3 or MicroVAX, though, you probably left Chaosnet behind.
Chaosnet today: https://chaosnet.net/