If you’ve been a part of this community for any length of time, you’ll have heard people say, “That’s not lindy hop.” Often it’s just an observation. If someone mistakes polka for lindy hop, we gently correct them.
But sometimes that line is meant to marginalize the dancing being evaluated. When a dancer attempts to do lindy hop and you tell them, “That’s not lindy hop,” what have you accomplished? Besides hurting their feelings.
Since no one person holds the key to lindy hop, perhaps you could try saying, “That’s not quite lindy hop.”
See the difference? The addition of one extra word turns your affect from arrogance into thoughtfulness. It implies you’ve actually wrestled deeply with what lindy hop could be, instead of spouting a dismissive, knee-jerk reaction.