People with taste don't really agree or like people without taste. Maybe your luxuriously equal and fair lifestyle is not for everyone. I wouldn't be caught dead in a pair of Beats. For so many reasons chief among them they sound like crap.
But I can understand people not wanting this or not agreeing with it in anyway. I'm not going to go popping tires of Beats customers or anything. But I do know I won't be befriending many such people either based on their knowledge and taste in audio. I can understand also why some people like them I guess. It makes them fit in. Like a pair of nice jeans or something. But again there is a divide between people and their tastes here and it is a definite schism imo.
And the first quote in many ways is not a personal judgement. Objectively, Beats audio is terrible. Objectively, they are worse sounding than other headphones. If said person is wearing headphones not to listen to them is the only way this is a personal value judgement. Otherwise no. It is stupid, in that stupid is equated with paying more money than you need to for MUCH MUCH lesser quality. That is stupid in my book too.
The subjective portion comes in when you start using words like "better." Car A weights 3200 lbs and car B weighs 3500 lbs. Is car B better? If we only care about which is heaviest, sure. If someone cares primarily about sound quality, Beats are not better than many other less expensive options. But people buy headphones for reasons other than sound quality, so white headphones might be better than grey headphones if someone wants white headphones. How you choose to define "better" or what ever metric you decide to judge a product against is entirely subjective.