Pretty much. I think this guy just needs to grow up. Be it through failure in dota 2 then ._.
It does sound a lot like the SC -> SC2 arguments to me, people claiming multiple building selection ruins the skill in the game? Really. It's an improvement in the way the game is/can be played in my eyes, yes it will have an impact in the competitive way of playing, but it's a necessary improvement thinking of the future of the game. You can't hold on to outdated game mechanics when there's a new, better solution available, no matter how many purists claim you should. Competitive players will find other things to improve on.
I don't think you can compare the Dota to the SC transition.
Starcraft tried to be a lot different, whereas Dota is supposed to be the same game in a new engine.
There will always be arbitrary decisions about game mechanics, for example you see LoL devs saying that denying is an outdated mechanic. On the other hand I'm a fan of MBS and bigger control groups.