Yes, Marci Bowers is a disappointment as a political actor; she also opted to be interviewed by Matt Walsh (a famous anti-trans activist) for his film What is a Woman, and naively played into their purposes there.

And yes, you would think trans people would be able to empathize and understand the need for trans care, but… there are plenty of exceptions. Being trans does not magically make you a better advocate for trans people - think of people like Caitlyn Jenner, Blaire White, Aaron Kimberly, and Buck Angel. All of these famous trans people have advocated for conservative, anti-trans policies.