Not even trolling, but that line-up (with the exception of Coq to partner Xhaka), kinda makes sense in theory. You can't play out against Liverpool, so it's better to just play hoofball and you can't do that with Alexis up front. Giroud + Welbeck should result in much stronger physical presence in the box, which again makes sense since Liverpool really can't defend crosses.
Then again, last time Wenger tried to go for a deep counter attacking 4-4-2, it ended up in a 5-1 defeat
Still, Alexis should play.