I feel like this can be explained in part by “I like using it for myself, but I hate when others use it.”

When you use ChatGPT for yourself, you may have a sense that what you see is made up; when someone else that you trust uses it and pronounces the output in a way that suggests it is their own, you are left doing much more complex social math to figure out if your trust in this person or entity can hold. It gets exhausting, personally.