Democrats largely avoided identity politics in the last election, especially for Harris/Waltz campaign - whereas the MAGA and Republican camp was full of identity politic attacks on 'critical race theory', 'wokeism', 'antifa', 'DEI', 'woke liberals' and 'leftists' (each of which are undefinable terms to Republicans anyway). Results: they lost, and they still get idiotic posts like this one complaining that they identity-politicsed too hard.
If you have specific examples of identity politics where you think Democrats went too far and lost their audience then by all means, share them - but I'm confident this is just the echoed opinion of some talking head.