What's liberal identity politics have to do with leftism? Liberalism is a center-right ideology.

Us leftists are concerned with class issues, not identity issues.

Focusing on identity is nothing but a way to distract from class.

Lol. Gender ideology is very much a policy of left wing parties.

You may go for the One True Scotsman argument and say it's not proper leftism, and you may be right, but that doesn't stop it being policy.