Ehhh, Thunt is one of those people where I'm not at all surprised. It was clear he was not comfortable in himself.
Having said that, certainly for a drawing artist like this, I really don't see why anyone should care if the comic is now drawn by Ellipsis. It's not like her drawing style is going to be completely different. It just means I get to make more bad jokes about women and time management when she's late or irregular in posting updates.
(I don't mean it'd be okay to dump, say, a writer over being trans. This is not a political forum, but I'm all in favor of anyone being who they feel they are. But, for example, a famous Belgian singer has announced her passing from Sarah to Sam. While that's most definitely his right, his voice is quite different from what hers was, and I can understand people saying they preferred one sound over the other. Separate from it being the same person, having a band change lead singer often has fans leaving or voicing a preference for one or the other)