I can't stand to be friends with weak people, is this normal?

I don't mean in the physical sense, I can't stand weak willed people, like it really bothers me and I'm wondering if this is normal, because literally that sh*t drives me crazy when I see situation like it. One of my acquaintances, never defends herself, instead she just makes excuses for the sh*tty people that are fake towards her. It's gotten to the point I'm starting to really dislike her and can't stand to be near her.
I can't stand to be friends with weak people, is this normal?
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