The stat is bullshit regardless of Ole being in it or not. Him being in it is just the icing on the cake. It ignores a lot of context for pretty much every single person on it. For example, Klopp and Arteta came midway in season while the season was already ruined and didn't get a chance to have a transfer market before getting their jobs, unlike Ten Hag and Pep Guardiola.
Klopp got 76 in his first full season in charge in England after his first transfer market, but most of these aren't included in your "stat", it's the games he spent trying to steady the ship after getting the job midway in season with no market that are included here (yet he's only less than Ten Hag in your great stat by 6 points, by the way).
It's not an achievement for Ten Hag that he got more points in such period than Klopp and Arteta. It's just a desperate stat to try and prove things are improving despite the fact he hasn't done anything more than the previous managers United hired.
For the record, Van Gaal got 76 points in his first 40 games with United and Mourinho got 75 points, only 2 and 3 points respectively less than what Ten Hag achieved.
Edit : Actually, even if we want to include Ole in this, does these 40 games include his 18 games with Cardiff ? Or it's just his United games ? Because that would be half of it, for God's sake.
Nah, it's bullshit no matter how much I think about it.