No, he's asking for ideas to be criticised, and for the people presenting the ideas not to be ostracised.
You can say "it's a bad idea to work on extending life", but following on from there to cast the person presenting the idea as unethical is doing more harm than good.
You can say "it's a bad idea to work on extending life", but following on from there to cast the person presenting the idea as unethical is doing more harm than good.