Well it's been very clearly explained to you why people would want to drop him.
I don't hate on him for no reason (yeah some do but you're responding to my posts here), if you don't take my word for it on me often defending him the evidence is here in this thread.
Saying "3 points is 3 points however you get them" is just about the least Arsenal thing I've heard someone say. Obviously you never turn your nose up at a win and that is the most important thing, but if you can do it whilst playing better and more entertaining football then that's even better. Also, I think we'll more regularly pick up 3 points with Alexis up front. We play more entertaining and more efficient football with him up front imo, and that will lead to more wins.
You can switch back to Alexis playing as CF fairly soon or we can wait for Giroud to start one of his infamous barren streaks, let his confidence go to shit due to poor form and then further compound that lack of confidence by dropping him. You say that you agree he shouldn't be our first choice, so for how long exactly do you want him to continue being our first choice as he currently is?