Bicycle helmet laws = bad?

"The Dangers of Helmets", a British Medical Journal article arguing against bicycle helmet laws:

http://www.bmj.com/cgi/content/full/321/7276/1582#SEC4

The basic arguments are:

1. Requiring helmets gives an impression that cycling is more dangerous than walking or driving, this scares off people who would be healthier if they cycled.
2. If a helmet is a legal requirement, people will think that simply having one is adequate, instead of learning how to bike cautiously.
3. Helmets don't actually protect riders (justification provided via a cartload of what is, to my eyes, rather questionable statistical analysis.)

Thoughts?