I have noticed similar phenomena with Claude, where its vocabulary subtly shifts how I think/frame/write about things or points me to subtle gaps in my own understanding. And I also usually come around to understand that it's often not arbitrary. But I do think some confirmation bias is at play: when it tries to shift me into the wrong directions repeatedly, I learn how to make it stop doing that.

It definitely adds a layer of cognitive load, in wrangling/shepherding/accomodating/accepting the unpredictable personalities and stochastic behaviors of the agents. It has strong default behaviors for certain small tasks, and where humans would eventually habituate prescribed procedures/requirements, the LLM's never really internalize my preferences. In that way, they are more like contractors than employees.

Why would it be scary? Claude is just parroting other human knowledge. It has no goal or agency.