I do the same from time to time, especially to recidivists, and then I pick "random" allies who know how to share & damage Boss from the History Pariticipants, instead of focusing on their Level/Helper Team.

I usually give some leeway on the number of "nukes" I let allies dish out before deciding to kick or not, because not only could it sometimes be a misclick, some of my allies are actually measuring out their damage very carefully in an attempt to reduce a Boss's HP by 50%.

At full HP, it could very well look like a nuke attempt, but reviewing the raid history/participation, it starts to become clearer who's actually putting thought into their attacks by the amount of damage dealed (and when they did, if a raid is still active).