I'm incredibly glad you haven't given up, and it's easy for me to understand the temptation. The number of times I've found *myself* getting frustrated at these articles when they're not even directed at me, I can't imagine how frustrating it must be for people who want to help.
In the end, I think we have to recognise that not everybody who writes about racism cares about ending it. For some, anger and division is the comfort zone. There are voices out there who do want progresss though, I'd just suggest you stop reading those that clearly don't.