These kinds of laws are fueled by attitudes that trans people are all early in transition and always don't look like their gender but instead like someone trying to look like the opposite gender. People transition and build lives after transition with new families and friend groups and workplaces that see them as though they were always the gender they present as, and often don't know that they are trans.
Revoking someone's HRT when they have been fully transitioned for 15 years with legal documents sorted, who have had kids growing up only knowing them as the gender they've used for the past 15 years, who are embedded in workplaces and school parent groups and in-law families, always having been known as their current gender in those contexts, is insane and criminal.
It also introduces non mental-health consequences like loss of bone density, loss of libido, chronic tiredness and fatigue, and shortens life span, when you take hormones away from someone who had the natural ability to create hormones surgically taken away decades ago, but who is expected to live decades more.
Stop voting Republican at any level, PLEASE. This is genocide. Not every trans person is an activist or new to it or not passing as their gender or has trans or queer community. Trans people are people just like you.