You are still wrong here to just talk about "permanent" manager results. You say including his first period is inflating? That is his results. It is not something someone made up. What you are doing (or what it looks like you are doing) is taking out stats so you can make a point. From scientific point of view that is wrong.
You made up your mind - You look at stats - You choose from the stats what benifits you - You present it.
It is like someone could say. Oh, Solskjaer has 100% win record. How? Well, I only looked at stats from this midweek.
Ole Gunnar Solskjaer win percentage is 47,52%. 1,42 in goals scored. 1,07 in goals conceded. Yes, it is worst then other post-Fergie managers but why trying to make it worst than it is. According to
https://www.stretfordend.co.uk/ If that is a website that can be trusted.
Then you say, something has changed. But nowhere do I see you reflecting about that. About injuries or the simple fact that Solskjaer has a squad that is worst than any other of post-Fergie managers. It's just "permanent manager fact" while ignoring and thinking everything else is irrelevant.