The difference in my current thinking has to do with the connection between opposing the killing of animals, and being a vegetarian. I don’t think there is much of a connection, in fact. That is, the fact that it is wrong to kill animals does not mean one ought to be a vegetarian. It doesn’t even make vegetarianism a good idea.
I previously wrote something slightly silly about vegetarianism on this blog, but the discussion it led to what was quite interesting. The focus of the discussion was different to the focus in the article linked to above, but in the comments I wrote the following which I think is somewhat relevant to the Marxist take of the article:
I do think though, that at some point in humanity’s future we will all choose (but not be forced by law) to stop eating animals for ethical reasons… The more general issue is about what and who you care about. As our personal circumstances improve (we’re lifted out of poverty for example), we gain the possibility to be compassionate towards others that we didn’t have before.