Yeah, but they are recommending selling naked combos in single-names.
Really? They're recommending? Can you point to where they're doing that?
I've been watching them for most of a year, and - like everyone else in the financial space - they're damn near paranoid about pasting "this is not a recommendation" all over the place. They talk about what they've done, not what you're supposed to do.
I will note that NO trading info of this sort, from anyone, should just be swallowed wholesale; you need to do your own research, use your own brain, and do lots of testing at small scale until you're satisfied that it works for you. I've tested what they present for myself, and have my own conclusions about it; anyone who hasn't done that, or doesn't understand the larger context in which these trades are supposed to be executed to be successful - again, true of any sort of trading - really can't have a meaningful or valid opinion.