Pretty sure they all banned and disciplined players. The difference under Ten Hag is I think maybe some of the disruptive elements had moved on before he took over.
But if we're being honest have his measures disciplinary measures haven't really as successful as you say? We're still having problems like Sancho (which could have been handled better by both) and a senior player like Rashford fecking off midweek to have a piss up after more than a year into his tenure.
I don't really want to get snarky, so I'm not gonna bite this time, but "if we're being honest" is unnecessarily condescending and undermines the idea that you're debating in good faith.
As for his disciplinary measures, I'd say they've been much more successful than previous managers. Ronaldo basically ran roughshod over Ole and Rangnick, Mou had key players in open rebellion, LVG had half a team playing his way and half a team trying to default to a mid block, really we've been governed by player power since Moyes took over. Sancho is gone, as he should be given his behaviour, whereas under any of the previous managers he'd have become a dressing room poison.
Have us playing proactive football, looking like a well drilled team and winning doing so. I'm sure we might have done a bit better going back to the trusty mid block of the past decade, but for me that's a worse option than trying to adopt a new approach, even if we fail at first.