You are both right imo.
@Aussiegooner has it spot on in the sense that theo isnt always firing on all cylinders. Be it through fitness or the contract business. Depending on him as a key first choice player isnt necessarily smart. And for the duration of a season we shouldnt have a sub par backup like Oxlade as our go to, when our rivals DO have consistantly fit and performing players ready and willing.
However @Arsenal4thetreble is equally spot on in that theo is a beast that not only gets results, but can perform to the highest level.
If you want to know why Wenger, and Arsenal as a whole persist with Walcott, i defer to what Messi himself said, and i quote “I can only speak from experience but he was one of the most dangerous players I have ever played against. Barcelona players are not scared easily but I can tell you that when we played Arsenal last season he truly worried us.”
If the greatest player of all time (come at me) offers that sort of praise, then he could be Diaby level injured for all i care. I want him here, and i want him on 100k a week, or what ever the fuck he wants. We make enough money and have enough people in the squad to handle that shit.