Do you give them any second chances? In real life, face to face or possibly on the phone. Or in email if they allow emails. YES, I always do in real life anyway. With one of the new T's I tried, he was terrible and came off judgemental about my grief, I emailed him how I felt, he sent a kind apologizing email, went in a second time and he was actually pretty good.

How do you define unkind? From a therapist or counsellor... That really depends on the person. For me, it was feeling judged about my situation

Is anyone in the room ever allowed to feel angry? Of course, why not?

Who is the most important person in the room.. During the hour, the client, but in general, both people are important. There should be no competition
Who’s needs “should take priority” During the hour, the client. That's the point of therapy