How is the support in Dell precision line for Linux? Some models can be preconfigured with Linux, so I assume the support for Linux in precision line is better

How is the support in Dell precision line for Linux? Some models can be preconfigured with Linux, so I assume the support for Linux in precision line is better than in XPS. But this post from yesterday (mostly criticizing XPS) is discouraging: https://news.ycombinator.com/item?id=30333956 https://news.ycombinator.com/item?id=30333956 They seem to be heavier than XPS laptops (3560 is the lightest).