No one has said that. It's just that a helmet has gradually become 'part of the uniform' without people noticing. It's a triumph for the manufacturers, who are coining it. When people see me riding bare-headed they are shocked, as it isn't what they are expecting. One person said, 'I didn't realise you could cycle without a helmet. I never even thought about it.'
It's beyond me why you feel so persecuted about this, when in fact it's the other way around. I get comments and even mild abuse for not wearing a lump of polystyrene on my head. It is ludicrous.