If you take "January window no less" out of your post, and it is extremely far from ridiculous. The notion is that we lack ambition because... We're already like.. 3 windows behind. Our issues was there to see for everyone 2-3 years ago or so. We knew we needed a rebuild, again, yet they didn't want to give that job to Mourinho, but still kept him in the job while withholding funds, ignoring the opportunity to do business in the transfer windows. We've been prolonging the inevitable and giving contracts to the likes of Lingard, Mata, Jones etc. haven't solved anything. We still need to "replace" Fellaini, Lukaku, Herrera etc. including upgrading on useless players. Maybe even have to prepare ourselves for life without Pogba even. Point is... We need to make use of every window of opportunity to do business in the transfer-market. If we don't buy players now we can't sell others just because of how thin our squad is. We can't do everything in one window, so with every window we do nothing, it just means less business will happen the next window. If we continue to let this happen we do lack ambition.
It’s the ‘January window no less’ that is the basis for my point. If you take it out, we also become far more likely to strengthen the squad, of course.