Consider this, as a young jedi in training, Luke ignores Yoda's earning about this. He loses his hand, and a close friend is frozen in carbonate, they don't know if he survives (at the time). Also, C-3PO is disassembled, which is obviously quite distressing for the Droid.

He later learns, either from Ashoka or the force Ghosts of Obi-Wan and Yoda, that his father fell for the same reason - causing immeasurable pain and suffering across the galaxy.

It's understandable he would overreact.