Literally everyone is a product of their environment. So I guess in that regard there’s no such thing as a blameworthy individual. If we believe we are products of our environment, we have to actually believe that.
We aren't merely products of our environment but conscious shapers of it as well. Humans, shaped by their environment, shapes their environment. Given that this shaping is conscious, it means we can assign praise for people who consciously shape our environment for the better and contempt for people who consciously shape our environment for the worse. Marx said that man does not make history as he pleases. He did not say that history makes man, which is what you're suggesting. To suggest this is to slide into undialectical mechanism.
We aren't merely products of our environment but conscious shapers of it as well. Humans, shaped by their environment, shapes their environment. Given that this shaping is conscious, it means we can assign praise for people who consciously shape our environment for the better and contempt for people who consciously shape our environment for the worse. Marx said that man does not make history as he pleases. He did not say that history makes man, which is what you're suggesting. To suggest this is to slide into undialectical mechanism.