If you don't like Claude's personallity, ask him to behave differently. It's common for me to periodically say 'don't be so sycophantic' and 'be more critical' when working on technical projects.

In your case, try saying 'be nicer' or 'be more jovial'.

I had tried and it started being defensive about this too, haha. Hence my flip-the-table reaction, deciding to just cancel my subscription. Maybe I will come around later.