The correct way to give a person a handicap is via the handicap system or custom komi.
We encounter players doing this (passing or playing passing moves) enough for it to be not a joke: where it’s suggested, we need to point out that it is not welcome.
It is rank manipulation: it is an action that deceives the ranking system, and thus other players, about a player’s rank. That is why it is not welcome.
Yes, definitely! This one has amazingly persuasive looking arguments for both sides!
Here is the debate that has raged since 2014 - happy reading & considering