But I've noticed recently it's started slipping back into more "That's a great idea" and "You've got this" cheerleading, so I'm going to have to tell it to knock that out again. It will definitely lean into confirmation bias if that's what you're looking for, and you don't explicitly tell it not to worry about how you'll feel about the answer.
I find it useful for bouncing ideas off of, while keeping in mind that I'm really bouncing them off myself and sort of a hive mind made up of what's been said in certain mainstream sectors of the Internet. I'm less creative than average, so I get more ideas that way than I'd get from just journaling, so that's worth something.