AFAIK DMCA is such a strong law that you just have to circumvent any kind of access mechanism to violate it. I’m not a lawyer.
“No person shall circumvent a technological measure that effectively controls access to a work protected under this title.”
“to "circumvent a technological measure" means to descramble a scrambled work, to decrypt an encrypted work, or otherwise to avoid, bypass, remove, deactivate, or impair a technological measure, without the authority of the copyright owner;”
I’m not sure how modding works in the case but usually this is why companies can come after folks.