We are not 'notoriously slow at getting deals done', we do some deals quickly (Maddison? Vicario?), and others more slowly, just like any other club.
Even if we were slow, that wouldn't matter as long as we get the right players, which is where we have failed in recent years. (And I do mean the right players, not just the most expensive - N'Dombele, Lo Celso, Sanchez etc).
It is insane to say that Villa are ahead of us based on a single season and some new players who may or may not be successes. And it's insane to say Villa are outspending us when by any metric so far, they are not and have not. They may do so this summer - every summer had a couple of clubs going a bit crazy, I won't be losing any sleep over it. Let's see how they do this season before we all start giving them the sort of praise than some of our fanbase would never lavish on us for similar achievements...