Well that's the beauty of a public forum isn't it. If I am wrong, you can come back and show me in May. I won't be though.
So, just to clarify, ANY manager who doesn't win the league in his first two full seasons should be sacked? Just checking that is exactly what you are saying, because if so you would have sacked Sir Alex Ferguson and Jurgen Klopp, amongst others.
On your point about Ole not coaching the team...you know that it's 100% normal for a manager NOT to coach the team, right? Watch the 'Overlap' interview with Roy Keane and Gary Neville. Keane says that the first question they ask when you take your Pro License is "do you want to be a coach or a manager?". Clearly, Ole is a manager. Sir Alex Ferguson was a manager. There's nothing wrong with this approach at all, it's not some kind of problem, as you insinuate.
The fact is, and many people don't appreciate this, the job of the manager at a top club like United is to do exactly that - manage. It's not to watch video analysis of players or opponents. It's not to stand on the training pitch, taking technical coaching sessions. It's not to sit on the phone with other managers/chairmen, haggling over transfer fees. It's not to sit with players negotiating their goal bonus or image rights or whatever. It's to MANAGE the TEAM of people responsible for doing those things.
The improvement across every department at Manchester United has been immeasurable since Ole took over. I can't fathom the attitude of someone who wants him sacked because he hasn't taken an average (and very young) squad from 6th to 1st in two season!