Been running Ubuntu LTS releases on all my server VMs for 8 years and haven’t had a single problem. Absolutely solid as a rock. Fantastic support, loads of guides to do anything. Plus you can get 10years of support as a home user with a free Ubuntu Pro subscription.
XML is a superior format to Json or yaml or any of those other trendy formats around today. It’s the hill I’m willing to die on because I’m right.