As long as we´re talking about road-riding (tarmac or gravel roads), I think it´s pretty much the exact opposite, especially for beginners. Without ABS, they won´t have a snowballs chance in hell to execute a controlled hard braking AND at the same time going around an object, when the surface does not offer perfect and unchanging grip. And remember, there´s the element of surprise, that´s very important, and it can catch out an experienced rider, too. A beginner is very highly likely to either lock the front or back end, or be afraid to use the brakes effectively at all, and neither action will help much. It´s not the correct way to brake, but when you´ve wetted your pants, it doesn´t matter, and with ABS the beginner can afford to just slam on both brakes in panic, and will be much less likely to go down. Even steering the bike a bit will be possible. When the bike is very heavily loaded, two-up & luggage, I think many experienced riders will look like novices in a situation like that. That is because the really bad situations are the ones, that are very hard to simulate. Usually there´s no time to think, you just need to act instantly. You can ride a bike for decades, and never get into a situation like that. But on the other hand you´ll never know, it could happen today or tomorrow. One thing that I do worry about a bit, is the possibility that new riders, who have ABS on their first bike, depend on it too much, and start to think that effective braking is the same as just slamming both brakes. It is not.