I'm so confused right now.
in a fantasy football draft, a common strategy is to draft that your starting running backs primary backup as a "handcuff," this way if there's an injury you just plug and play the other guy. That doesn't mean you are ENTITLED to that person. Any team can draft them. If you wait too long you miss out. Simple as that.
Calling "dibs" on other players is to me bad faith. That's not what happened in this instance, but expecting dibs on anyone is bad faith. That would be like me saying before the draft "I am taking Cena, Hogan, Rock, and Austin for a Fatal 4 Way nobody can take them" and everyone accepting that.
Is it bad faith to immediately draft a tag exclusive person? Yes. If that person is also a single or in other tag teams is it bad faith? No, not at all.
We've all been sniped in this draft already. No big deal it happens. Move on, no need to offend the person who sniped you.