"harder for visually impaired people to interact with Dell's platforms than it is for sighted users" - well, yes. Being visually impaired makes things harder, that's why it's classed as a disability, so I'm not sure why he bothered saying this.
But they have a legal and social responsibility to make their site usable for visually impaired people too, so I wish him the best of luck.
That said, Dell's website is simply hard to use in general, and I'm pretty sure that's at least partly by design. And ever since LinusTechTips recent video, where they try to buy a PC and are actually scammed by their sales team, I've been pretty unimpressed by Dell.