yes. no one is saying a brokered convention is a run off so why did you bring them up lmao
the post i quoted stated that you could feasibly make a moral argument around the idea that not going with a candidate with a plurality because they do not represent the 'will of the people' (nebulously defined), which naturally assumes that if bernie sanders was not your first choice, your second choice was obviously the next most viable moderate even though that's not actually how people vote. again, the second choice for most biden voters is bernie even though 'logically' it should be a candidate like bloomberg or buttigieg.
a brokered convention is not a runoff and does not actually represent what a majority of voters would actually settle for because none of them are consulted in this process. it's, again, a bunch of backroom dealings and bargains made out of the eyes of the public where the endgoal is to effectively annul a huge portion of votes without the consent of those voters.