It all seems to come down to personal preference to me. Along with a dose of what you consider important to contributing to the group. Throw in a dollop of ignoring the versatility built into the game then justifying your opinion with argumentum ad populum.![]()
The point that the Dungeon Dudes are accidentally highlighting is the 5e Wizard can fulfill 4-5 of the 7 roles in a party and the other 2-5 PCs have to fight for the remaining 2-3. So it becomes up to the Wizard player to not forfeit more roles or for the DM to take them away. And the other casters have similar high number of role competency.
So if the casters have self-nerf or the DM has to actually hose them. No one asks the ranger to stop doing so much damage, you are stepping on X's and Y's toes.