This myth that 81 points is usually good enough to win the league needs to die. It has very rarely done the job to secure the Premier League title in recent times.
Since the PL format was changed to a 20 team league in 1995 it's only happened six times, out of 24 seasons, where a team has won the league with 81 points or less. That's not a lot. And half of those came before 2000, so in the last 20 years, 81 points would have been enough only three times. That's not a lot either.
But back on topic, regarding Solskjær, the situation that we're in is not all on him, there are a lot of reasons for it. Lack of a clear vision from the board, then going on hiring the wrong managers who ask for the wrong players to be bought. It's all a big mess and we're are in the need of complete rebuild... again.
That being said, we've been really bad for the most part since PSG away, and when I see the likes of Rodgers and Lampard coming in an putting their stamp on their respective teams almost immediately and without spending much money, I have to ask, what is Solskjær's plan with us? What kind of football does he want us to play? Almost every game its the same thing, the players look like they're playing football for the first time in their lives.
We don't have a great squad, but seriously, it's not that bad. Yes, we've got some really shit and/or old players like Young, Matic, Pereira, Mata and Lingard who need to be shipped out ASAP but we've also got some very good and talented players, some of whom are regulars for their international sides. Yet there are so many games where the opponent is obviously better coached than we are. Where the opponent has a clear style and plan. Like we saw today with Sheffield United who outplayed us for 70 minutes despite mostly using players who have been playing in the Championship and League 1 in recent years.
So for me, the reason why we've looked so bad for the past few months is not simply due to poor quality players or injury troubles (although that plays a part) but mainly down to poor coaching. I really wanted it to work out with Solskjær, but unfortunately I think the job is just to big for him and he needs to leave.