I don't think that's quite what they meant.
More that there are a variety of non-monogamous styles (like swinging) that aren't poly.
Not that it's necessarily that one person is or isn't allowed.
That someone whose bi (which I am) may not actually act on it within the bounds of a mono relationship. Heck-I'm in a poly relationship-but there just isn't anyone who meets my criteria for dating to fill that interest of mine.
Anyway-it's totally ok to be seeking info. Just realize-some of the info you get, won't be pertinent, and some you didn't think was pertinent, might be.
"Love As Thou Wilt"