Is drawing really necessary in the Swiss system?

Is drawing really necessary in the Swiss system? The Swiss system in CS majors doesn't have drawing, there are no accusations of lottery manipulation, and no one complains because all the schedules are arranged according to the rules.

Riot's League of Legends has always shown their draws. Probably just trying to increase hype carrying that same process over here on Valorant.

Bro compare cs with velorant ⚒️