I think we need to make something clear.
Bandits have absolutely nothing to do with multiplayer, much less PvP.
Bandits are just another form of enemy. Their AI might be better, but other than that, they're still enemies. Without anything further, the entity classes are just regurgitating info. That info is likely legitimate, but it might also be from the people who want you to adopt their code of conduct and/or are selling you something.
But for a lot of mods, bandits (as implemented "correctly") would be a single-player replacement for PvP. In most games that is the ideal, and I don't see 7D2D breaking that particular mode. Of course I'm not a TFP dev so I don't know for sure, but since TFP has never indicated that bandits would be anything other than enemies, I feel confidant that I'm not entirely incorrect.
Having said that - there is a mod called NPC Core which allows all sorts of NPCs, including friendly NPCs. I have made packs for that mod, which means that pack has allowed me to make non-enemy NPCs (which can be hired and such).
But again, this is not a "multiplayer" issue, since each individual player can have their own hires, and hire as many as they want.