I think people mistakenly associate stoicism with nonchalance/lack of emotion because most people learn concepts by association; if you associate things incorrectly, then their perception of your personality gets warped by that

I think it’s a wonderful thing that you are not shaken or easily influenced by the perpetual shifts and changes of the people and in the world around you ! I’m sure the more you patiently elaborate, the more your friends will learn to understand who you really are (・∀・)