Weak grip strength can compromise deadlift form by preventing proper tension between the bar and torso, increasing injury risk.

“when you watch someone who's got a weak grip deadlifting it's very difficult for them to deadlift correctly because they don't create a proper wedge they don't create enough tension between the bar and their torso because their grip is weak and if they don't create that tension they're gonna compromise their lift and by the way then they're more likely to get injured”