The first mistake I see people make is assuming there are completely "nonviolent" ways to be transphobic. It seems like some people conceptualize transphobia as being either violent (which is always physical in some way) or nonviolent (which is "simple" emotional, verbal, or psychological abuse)

It seems, also, that people presume that when somebody has "noble" intentions for their transphobia - "I'm trying to save you!" for instance - it is suddenly nonviolent. Consider, though, how a transphobe would "save" a trans person. Would they allow that person to exist unadulterated (including being able to transition), or would they prefer to put them through conversion therapy, or revoke their access to bodily autonomy, or force them to have children, or anything that will prevent them from transition or even identifying as trans or otherwise tying them down with the obligations that prevent transition or identifying as trans?

There is no true "nonviolent" way to be transphobic because being transphobic relies on denying one the ability to autonomy and personhood. Fundamentally, even the transphobes who "want to save us" only do so in their own self-interest to save them from the horror of knowing that more people than they are alive and thriving.