That site has been discussed in Linux forums many times, and the general consensus is that it's an amusing bit of fun, rather than a useful tool. I don't expect that anyone has been harmed by taking its advice, but it's really only another opinion among many.
Really I think that the best unbiased advice is to pick one of the top few in the Distrowatch listings and give it a real workout so you get used to it and can do useful things with it. They all 'work' but they all have their quirks and foibles, things you like and things you don't, and only you can ultimately decide what you prefer.
Sorry, I didn't mean to shoot your suggestion down in flames