Well my point is more towards that, Ig it's a matter of how you define what a duelist is. Imo it is someone designed to take duels not just entry, but Ig it's subjective
Their job is to take space
You're getting owned in this thread because Chamber holds space, not takes it. Sure, he can peak an angle and get a first blood, but if no one is there he just has to wait for something to happen.
Playing Chamber and playing duelists are totally different roles with different objectives
Duelists were playing Chamber when he was meta because most of those duelists were one-trick Jetts/Ops who couldnt play anything else at the highest level. They were mostly playing the Chamber style "sit in off-angle with operator and dash away" type shit anyway that Chamber was now better for after the Jett nerfs.