He doesn't admit to anything in that report. All he says is that he would have approached it differently.
“What would I change in my career?” he mused in response to a question during a special Shell Q&A. “I have some moments that if I could have them again, yes I would do them differently – probably 1997 at Jerez. I would have had a couple of opportunities to avoid all this and still win the championship, but you take your lessons and you learn from them.”
Doesn't sound like an admission to me.
Either way, it's all in the past. Schumacher quite rightly got all the records going and went onto even more success and Villeneuve faded to obscurity (which I always thought was strange but I guess BAR's huge bag of dollars helped).