Some authors are indeed very hard to separate from their work, and Lovecraft is one of them.

I still enjoy reading him, but I always struggle reading his passages about mongrels, halfbreeds or dark skinned people being evil or deceitful, because that's what he truly believed. So yes, it flowed into what he wrote.

A much less odious -- and better! -- writer who I also had trouble with was Jack London, who also wrote some racist descriptions of blacks and Native Americans, doubly troubling because he was a socialist.