Why this game needs a votekick feature

As if pugging HM Titan wasn't bad enough
https://www.youtube.com/watch?v=1K3rCZQo1xU

Worst part is he was so worried about wasting 15 mins of time, but he ended up wasting 25 mins of his time griefing us in the end. Not sure what he even accomplished, or why people do this.