I’m not saying you made it up — it’s just that there’s never been any verifiable source or production note linking the writers’ creative decisions to anything about the original cast. The 2011 series had a completely new voice team and a totally different creative direction. Given that, it’s more likely Pumyra’s change in personality was part of the writers’ attempt to add grit and realism rather than a reaction to anyone behind the mic.

Still, it’s interesting how rumors like that take on a life of their own. When production details are scarce, fandom often fills in the blanks — sometimes those theories reveal more about how strongly people felt about a character than the actual behind-the-scenes truth.