I completely disagree. Doing what you must to survive is not against any of the socialist principles that I follow. In a similar way, as a vegan, I don't think it is against the principles of veganism to kill and eat a wild animal (or a fellow human) if you are in a situation where that is literally the only way to survive. Every person, and every thing on this planet, has the fundamental right to fight for their own existence even at the detriment of others, and to me that principle outweighs all else. It is in the absence of necessity that other principles, such as those that say murder is wrong and that it is wrong to benefit from the work of others, come into play.