I didn't miss his point, I agree with the conclusion. I questioned the logic, because there was none.
Just to reiterate the already eloquently exposed "point" which you so sorely missed:
Single-player game is not the same as multi-player game.
1. What other players do in their games does not affect your gameplay in single-player, as opposed to multi-player;
2. In multi-player you play 1 character; in party-based single-player you play several characters at the same time (up to 6 in PoE).
Therefore, nerfing classes in single-player only frustrates people playing those classes, without any corresponding benefit for people playing other classes. In fact, these other people are also negatively affected, because the nerfed classes may include their favourite NPCs/adventurers.
However, buffing "weak" classes (as opposed to nerfing "strong" ones) has a tangible benefit of not only satisfying people currently playing these classes, but also making the classes more attractive to other players that might want to try them out (at least by including an NPC in their party).
Multi-player nerfs: win-lose
Single-player nerfs: lose-lose
Single-player buffs: win-win
Edited by Lord Vicious, 13 April 2015 - 12:44 PM.