No, there isn't some word for that.

"Transphobia" is not the same as "damaging societal perceptions of transgender people". My colleague is transphobic. He hasn't damaged societal perceptions of transgender people, because he doesn't have a massive platform. Charlie Kirk, who I agree is transphobic, went one step further and actually impacted large groups of people's beliefs.

Your assumption that I was minimizing the damage he did with my wording is the opposite of correct; I was using that wording to express that the damage he did was worse than simply being transphobic.

Please do not assume the worst of me.