Yeah seriously, a little harsh. This is really just a question of why they're playing. A lot of people throw around words like "n00bs" or "tourney***s" to represent people who either "aren't good enough" or "take the game too seriously" but it's all just a matter of what's fun for you. some people really enjoy being pushed as far as they can go and trying to still come out on top. Other people are just interested in throwing down a couple quick matches for fun, and seeing something like a chainthrow completely incapacitate them can be just frustrating.
Essentially, no, it's not cheap, other characters can still beat d3 pretty solidly in spite of moves like this, it's just a matter of who's playing and why. Frankly, I think if he doesn't want to get beat up on, he shouldn't have gone on line.