What does it matter? If a website for a new router only supported Internet Explorer, I definitely would know either I'm not their target market, or they know nothing about that market, or they don't care.
I would argue that the percentage of people who care about websites working with JavaScript disabled is so low that no hardware company considers them a target market
I wasn't saying that no JS support is hurting them. I was objecting to the notion that them being separate teams is relevant. It's perfectly reasonable to judge a product by how it is marketed.