I’m no fan of identity politics myself.
But it is a useful tool that the other side uses. And I see no reason for the GOP to unilaterally disarm itself.
I still don’t see why it is racist to target white voters and maximize their turnout.
As part of a larger strategy that could be a great focusing tactic. But you'd have to be pretty clear about just what is "white" about it as opposed to using a tactic that applies equally to everyone.
It's tricky. Off the top of my head I can't think of anything that would appeal only to whites but I'm overdue for my nap so maybe that's not too surprising...