Richards build was custom designed to take out Fat Han, to the exclusion of all else. He said so himself. If you expect to face 3 things in the "Meta": Fat Han, Phantom, Swarm, and you get destroyed by one of those things because you didnt plan to face it, then your list is simply bad.
I'd tend to think that if your build can handle 2 of the 3 it's a pretty good build. You need to use tactics to come out on top of the match-up that you are weak against, which is what happened here.
People can disagree with whether or not that tactic was cheesy (it is a little cheesy) and whether it's worth FFG doing anything about it (they shouldn't) but it was a valid and legal move taken by a player to mitigate a weakness in his list.