I was thinking the other day, the amount steem might be worth in some of these other countries might be a factor as well. For some, 1 or 2 steem/SBD could be enough to live off for a month. Not that it justifies these horrible comments, but I can see why some might be tempted to leave a higher quantity of comments over fewer quality ones; especially if they are new and English isn't their primary means of communication.
I know the money makes a bigger difference to some people, but I still think it should be earned. Maybe in time people will form more regional communities where they can chat in their own language. I know there's a big Korean presence here, but I may not even see those posts.