I could care less if the dude wants to make it rain to promote his site, and its completely legit. That's great have at it. But what I don't like is when they do these transactions, its a HUGE issue to the entire network, and if there is a bug that causes the pools to fork (and he can separate his pools from that bug) its obviously an issue. With that being said, there are far fewer issues with the other pools when the "rain" isn't happening.
Stress test or not. If you are legitimate in wanting to make the coin as good as it can be, you don't do this over and over and over and over and over again, and expect a different result, unless it IS the result that you are expecting and wanting! If you do this, and see that there is an issue, you fix it, and retest. You don't just continue to do it! Its kind of ironic, no rain today, no pool issues. Go figure.