The absence of evidence of overrepresentation, combined with the low observed frequency, is sufficient to refute the initial claim that trans people are overrepresented.
No it isn't -- the data is too weak to either refute or confirm that claim.
This is technically a true statement, however, it is still absolute nonsense.
It implies a sense of parity between sides when in reality, if something doesn't have any evidence to support it, it isn't worth the words to project the thought.