Subject: Re: Happy Pride Month!
I don't mimic an Amish way of speaking to 'fit in' nor should I have to with a trans person.

No one expects you to. If you're having a conversation with a trans person, you don't have to mimic them (nor is there really any way you could mimic "trans-ness," since being trans doesn't have a particular way of speaking). Just don't deliberately misgender or deadname them - which it sounds like you would never do, anyway - and everyone will be fine!