Dear mxiangqi,
there is no doubt that, thanks to globalization, everyone in the globe has gained the right to be a moron.
Yet, the percentage of morons in chess.com (as well as other sites) who are residents of a very specific country is rather frightening.
Regards.
I,ve encountered the variation before, but for me, after 5...exd4 6.Nxd4 - Nxd4 7. Qxd4 it appears that white has a pretty wicked attack going on. That is according to the "army of hopefuls" opinon