To summarise, and clarify the context, because it's admittedly easy to lose track... And because it appears you have utterly misinterpreted my previous posts
This is from a practical defence perspective - if entertainment, do what you want
Techniques for 1v1 (and 2v1) are the ones worth practicing.
Against a group that "aren't trained" (training in this context includes developing a strategy for your Saturday night brawls) it's more likely you'll be subject to a series of 1v1 or 2v1 as they take turns.
Escape (or beat) the first, and you've either got away, won, or you're on to the next.
Against a group that "are trained" (/practiced / they've thought about it / whatever) then the best you can do is use the 1v1 and 2v1 techniques and hope you get lucky enough. Because, quite honestly, if they've thought about it they'll be on you all at once from different directions.
There's usually the comment made about multiples, where if you concentrate on one you may miss his mate coming up behind - think about the one in front, one coming up from behind, one left, one right - all at once. What exactly is the training strategy to counter that? Line them up?
Somehow, skribs then made the ludicrous leap of equating that with hoping to be a UFC champ :/
To use that analogy - someone claiming to be able to teach legitimate 1v3+ techniques is akin to an MMA coach only teaching a handstand kick.