I think grooved tyres are also an issue. Drivers seem to have much less confidence in pulling off moves on those than they used to on slicks. And a general lack of mechanical grip helps contribute to this.
Yeah, narrower tyres, grooved tyres, narrower cars and an increased focus on aerodynamic grip. A recipe for disaster. Mosley should never be forgiven for his 1998 regulation changes as far as I'm concerned.

Ayrton Senna: WDC 1988,
1989, 1990, 1991
McLaren: WCC 1974, 1984, 1985, 1988, 1989, 1990, 1991, 1998,
1999, 2007McLaren: WDC 1974, 1976, 1984, 1985, 1986, 1988, 1989, 1990, 1991, 1998, 1999, 2008