Who was the organizer of the conference? How they allowed frequent
interruption by the idiot during the presentation?

It was a real video footage. A drunken idiot went to the stage at the
end of presentation carrying a bear bottle on one hand.

I posted the video link to other FOSS forum.

Action outweighs thousands words of the person. The time will tell how
much damage would systemd cause on FOSS ecosphere overall. Empty
promises of systemd.