It is also about being mature and knowing what your talking about before suggesting.. If you read the whole thread you will find that the whole "don't use that motor" has been covered. And that he doesn't really care for what other people think he's choosing to do in a negative way.
You have no right to tell him to do what he is otherwise. You have also not answered any questions he has asked nor given any productive advice of achieving what he is attempting to do.
If I must say again.. This bullshit is killing any chance of people having a sense of individuality.
If you want opinions, put me the the OP's shoes and I would have told everyone who says its the wrong choice to pull their head in or not say anything at all.