I’m going to treat you with good faith and assume you were using “cool man” in the same way someone might say “that’s just like your opinion man”, as a saying, but I will remind you that this person has her pronouns in her display name, which is Emily and you need to respect her.
As an aside, you also came into this thread out the gate with dismissive and short replies. This is a reminder to be(e) nice on this instance.