it's strategy, but it's still lame. Like say in ice hockey, sometimes u can easily make a very rude tackle without the ref seeing it, it would help to get the opponents best player to sit in the bench for 5 mins becaues he got hurt. U could definitely call a tackle like that strategy, but it's still lame and shouldn't be part of the game.
Same kind of stuff in other sports too, like in paintball sometimes u can wipe away the hit without the ref seeing anything. It's strategy, helps ur team win the game. Sure it's against the rules, but it's still strategy. And yes, it's very lame.