For that matter, his contributions to the 90s FPSs he's most known for were more on the technical side, not creative. He was known for writing surprisingly performant FPS engines.
Take a break and return to posting with your main account, and hopefully you will spare us from tirades like this.
And an aside: DOOM Eternal absolutely rocked. Please state your issues with it as well please list what you would consider an amazing FPS game.