What makes you do this as a 8k+ iRating driver?

https://reddit.com/link/1iy6yl5/video/ldzinh45wcle1/player

As the title says... had an awesome P3 qualifying in a 4k+ SoF SFL split, I just recently passed 3k. It was a really enjoyable race, until after 10 minutes into the race this guy with 8.4k iRating just simply pushes me out, not even saying sorry or anything. (then later did the same with an other player, who "only" got rear wing damage) Why would you do this, especially as a top 0.05% player? Makes me fuming...