You could argue a long time about the meaning of "central". But I think there are certainly high-profile supporters of trans rights who have dodgy records. We all know that Peter Tatchell, for example, while not being trans himself, is a high-profile supporter of trans rights and is on the record as showing sympathy to sexual relations between adults and children.
Then there's Roger Spackman, a councillor who liked dressing up as a little girl, who was convicted for possessing child abuse images.
Or Peter Bright, a US journalist who was outspoken in support of trans rights, and was convicted of trying to procure sex with a young girl.
Or Veronica Ivy, the cyclist whose flatmate has been charged with soliciting a minor.
Then there are all the non-high profile ones - men who have been convicted of crimes relating to child sex abuse and who also happen to identify as trans. A UK list here, relating to child sexual abuse images:
https://transcrimeuk.com/category/sexual-offences/possession-of-csa-images/
Does it matter if they're not "central"?