Would you rather I said tactic? I guess Strategy is usually more of a long term plan, but it gets the message across, even if its not perfectly accurate.
I also looked through the wikipedia article that you found, and this was near the bottom:
"In game theory, a strategy refers to the rules that a player uses to choose between the available actionable options. Every player in a non-trivial game has a set of possible strategies to use when choosing what moves to make."
Even though Minecraft is more action oriented than, say, chess, you still have to choose whether to take another swing, or toss that potion and run.
I think your main problem here with the word "Strategy" is that it is too big. Generally, it means some large plan in war, something that is really important.
But sometimes, the game you are playing feels really important, doesn't it? And since in that game, the decisions really don't get much more important than what you decide, that can be called a strategy too.
I can see your point, if you still think its wrong. But please, I would rather you asked questions and posted about the content of the thread, and not the mistaken grammar.