Do people assume that god is christian?

I had one incident here at GAG, I had a argument about god with a lady, she assumed that I was christian and blocked me.

Actually I am not a Christian, but I felt that there is an assumption that God is christian. Also I felt that people have a low regard for Christianity. Hence they project their grievances of Christianity onto god as whole, without understanding how other religions interpret god. Seems like everyone hates god just because they hate biblical god.

Please help me to understand this assumption and projection.

Do people assume that god is christian?
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