I understand what you're saying and I don't think you misunderstand it. I think that there are large swaths of leftists who misunderstand what it means to build on class issues while including gender and racial issues. That we should only focus on class issues and then once that's solved, we can move on to racial and sexist issues. It's a faulty line of thinking. We can move in tandem on these issues and we should.
There is a history of highlighting class issues over all others to the detriment of the movement, like with Cesar Chavez.