No, not all atheists on Quora or in any other setting are arrogant and rude. Just like any other group of people, atheists can have diverse personalities, beliefs, and communication styles. It is essential to avoid making sweeping generalizations about any group based on the behavior of a few individuals.
On platforms like Quora, people from various backgrounds and beliefs participate in discussions, and their behavior can vary widely. Some atheists on Quora may indeed express themselves in an arrogant or rude manner, but the same can be said for some individuals of any religious or non-religious affiliation.
It's important to engage in discussions with an open mind, respect differing viewpoints, and focus on the substance of the arguments rather than making assumptions about people based on their beliefs. Constructive and respectful dialogue allows for meaningful conversations and learning from one another, regardless of our differing perspectives.