Theft is illegal anywhere you go and should be punished accordingly.
it should also be noted that PokeMMO may ban or remove your account at any given time for any reason they see fit in the agreement.
knowing this, a permanent ban from theft is a thing they could do without specifically writing it in ToS.
4. ACCOUNT SUSPENSION/DELETION
PokeMMO may suspend, modify, or delete any Account related to PokeMMO's Services at any time for any reason, or no reason, with or without notice to You, for any amount of time. For purposes of explanation, most account suspensions and modifications are the result of violation(s) with this Terms