So bit of a headcanon/theory

Collector's are able to mimic voices

I think this due to this Collector above having the same voice as The Collector we love

Now like I stated this is most definitely a different Collector due to how different their personality is (heck even on Villains wiki this one is labeled as the "Grand Huntsman") in fact it's even mentioned how they might be related to The Collector possibly an Archivist)

Heck even this post:The Owl House - Enter the Grand Huntsman by Khialat on DeviantArt

Mentioned the Huntsman mimicking The Collector to get them in trouble (aka making Papa Titan blame them and not well the Huntsman)

Personally this would be overpowered in my interpretation of Collectors but they might not be able to do this with like each other due to them not really needing to and maybe due to it not working on each other or something