Shut up, you're wrong, and go back to TGD MGuy.
It wasn't some random rant against wizards because more often than not, when the player is going around saying, "I win in this encounter!" and "I'm the most special character, so you all need to do whatever I want or need." it's the wizard player.
I can tell you right now that if you came to my table and expected the rest of the group to rest whenever you felt like it regardless of whatever else was going on, or if you started claiming how you specifically are winning, they tell your entitled ass to go find another group.
I'm still not MGuy, but your idiocy is duly noted and disregarded.
Now, in your games that probably is what is happening. This is because you are a terrible DM, with no idea of balance or power and therefore the only character in your groups who can do anything is the wizard as the others are either taking the wrong actions or playing the wrong classes to be relevant. And in such groups, if the wizard ever left for any reason the rest of the party would soon fall. In good groups however this is not the case as there is more than one competent PC.
Me? I play with good groups, and with not terrible DMs. That means that in a party of 4-6, all are relevant, all are useful.
Seems pretty clear to me.
Nope.
He starts off by giving examples of various types of encounters then saying you're not winning by overcoming those encounters. And yet that is the very definition of being successful. He then turns it into some dumbass party competing with itself rant.
Because he is such a moron, I'm going to mess with him a little by taunting him with Invincible* Wizards.
At the end of the day though, what matters is that the good groups are winning D&D as groups, and groups like his, where only the Wizard can carry the party but everyone bitches at the Wizard for saving their sorry asses die over and over and over again.
* - Not actually invincible, but he lacks the requisite skill and know how to threaten one, so invincible to him.