All ETH developers are automatically also, whether they want or not, ETC developers, given that it is essentially identical open source code.

So what you are saying is that ETC being the Criminals coin they are stealing all the ETH devs hard work.

Visibly, you didn't understand the concept of smart contract and "code is law", and now you don't understand the concept of "free open source code".

he probably understand, but since he is a mETH head he will keep spaming "ETC criminal" for whatever you say.

So do not think it is also legal for somebody to 51% attack a crypto currency and hacking due to a bug in a software?