It makes no sense why not to give him as much HP as the other free roam SCPs.
Right now 082 can easily be killed on accident by other SCPs and other ways too. If I remember correctly, he can only attack you if you insult him when you're eating with him at the dinner table.
Going off what Nydekore said, It's clear that 082 was introduced for the sake of role-playing and to be a replacement for 912 being removed.
If it's really meant for role-playing and to be a replacement, why doesn't he have the same HP as the other free roam SCPs?
He literally can't do anything else to harm you.