A lot of interviewers have complete leverage, so they don't get any sort of feedback or real check on their ability or processes. It's only when a candidate isn't desperate for the position, is competent, recognizes red flags, and gives them the feedback that they'd ever be aware of. You don't have to be upset to realize there's a mismatch and withdraw your candidacy.

Candidates often have to call out nonsense otherwise it may never be called out. Processes need feedback to adjust and adapt, otherwise they'll typically continue with momentum alone.

With that said you can give feedback in a polite and professional way, you don't have to be arrogant about it. "Based on the questions, it appears you're searching for these specific abilities which are often attributed to a junior role, so I believe I may be a mismatch for this specific role. I'm going to politely withdraw my continued involvement in this process. I appreciate your time and interest and hope you will contact me if a more senior role is available." Or something to that effect. You don't have to be arrogant to give feedback.

If you were like "what, this is ridiculous, what am I am an intern? Good luck filling this trash position!" And then walk out then sure, that person clearly had some anger management issues.