Funny thing is he actually became less racist over the course of his life as he got out more and stopped living such a sheltered lifestyle.
These people are nothing more than creative grave-robbers that couldn't come up with anything original, they spat on his grave, gave lip-service to PoC authors who created books inspired by Lovecraft (Funny enough they didn't opt to create a game based off of those books because, once again, this was lip-service), and then ran off with the money (If by small chance this was actually successful).
TLDR; Like it said in the tweet.
">uses Call of Cthulhu as a setting for their game
>calls Lovecraft racist
>"Here are some PoC authors"
Oh cool so why isn't your game based on those books then?"