It could also mean Star Trek: Discovery has more creature roles for Botet in the future, as recasting an actor in a different role isn’t a huge deal when their body is almost entirely concealed by makeup.
It’s also entirely possible Botet is portraying a “monster of the week” type creature and his time on Season 2 of Star Trek: Discovery will be short-lived.
Javier Botet did say he’s only a part of one episode, although the “for now” he added on could also be a tease that there’s a chance this character could return.