Identity politics is exactly how the electorate is divided, so why wouldn't that be how politicians respond?
The Democratic party is basically minority/women base with various people included who like socially liberal cultural policies and center-center-right economic policies.
The Republican party is basically straight Christian white male base, with a smattering of everyone else.
One party is a big tent. One party is pretty exclusive and will shout out loud who is and isn't allowed to be a member.
The easiest way to get past "identity" politics is to go to class politics, where 99.9% of the population bands together to rid itself of the 0.01% parasite class domination. Vote out the people who are destroying this country for profit and vote in people who want to build this country's infrastructure (infrastructure includes a safety net, by the way).
But, the 0.01% have all the money and power, and know they can essentially scare 1/2 the population into believing the other half is going to take all their stuff...and it just so happens that the people being told to be afraid of "socialism" aligns with the current Republican party base of straight Christian white males.
Just look at the blathering, scared snowflake diarrhea above my post.