If by this you mean "people crunched the numbers on the new warlock and found it OP"....then yes that's exactly what happened.
And that's what always happens. People look at something and goes "wow that's cool". then the math heads crunch the numbers and go "whoa whoa, wait a second, this seems off".... and that's how we find broken things. Some things are obviously so broken when you first look at them you just know they are broken, but most things actually take a little work to find.
In this case, TM found one, and others have backed it up with their own flavors of the math (several of which you can find in this forum). So yeah....allowing the class that gets both spellcasting, heal on attack, highly fast movement, access to all weapon masteries, ability to switch damage types at will, ability to use the social stat to do full damage, and the best DPR in the game is too much.