I always like to frame moral arguments like that from a librartarian perspective because it's a nice and mathematical. Transexuals are agressing against normal people by having them define reality from their perspective. This is mentally damaging and draining to the normal person when their perceived reality is different to what others describe and so appropriate force is morally justified to physically remove the offending parties to get back to the baseline of normality.

Truth doesn't need force to justify itself because it stands on its own merits so the people who deviate from truth and dictate that deviation to others have to use force to change what is true into lies.