Personally, for me it’s the idea that just because you don’t experience something (dysphoria, or being a gender other than what society expects of you) that doesn’t mean those experiences aren’t valid.
I get sooo tired of the response “I just don’t understand! I love being my AGAB! Why can’t you just get over it?”
As a cis male, I wish other cis folk would realize that my nail polish and the fact that I like shows that would normally be geared towards women doesn’t mean I am secretly trans, or closeted gay man.
I really wish people in general would stop labeling anyone but themselves as eggs or making similar assumptions.