I assume that's what this is about, but I have no idea why FBarnhill wouldn't just say as much, because it certainly isn't self evident. Some light googling tells me a few unofficial fan sites have pushed the "fun fact" that Creature is inspired by The Deep Ones, but yeah, I can find no official source to corroborate that. No mention of it by the film's writer, directors, or makeup and creature designers. It's a connection someone drew at some point and ran with it. At this point, though, there's nothing to be upset about here.
This surprised me - and while it's an excellent idea in theory, it does concern me a bit. My hope is that these are standalone acting characters whose sole role is to tell stories/interact with guests and not service workers who are forced to "act" without additional pay, like in early Galaxy's Edge. If the park underperforms, I fear these guys will be the first to be cut... but genuinely, here's hoping they're a hit and stay long-term.