I know very few Dota players who are actually good at melee, but I don't know a single melee player who is bad at Dota, myself included. Not to mention Dota has always been imbalanced, with core mechanical problems (stun vs blink) affecting competitive play.
If the game took no skill, you could walk in and be a top player. This is wrong.
If Dota players inherently had no skill and were bad at melee, there would be no Dota players who are good at SC2. This is also wrong.
These two facts bring me to the conclusion that you, in entirety, are wrong.
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