I mostly agree. I usually recommend Mint to new users, largely because their web site and defaults are very beginner-friendly. Mint is the modern version of what Ubuntu used to be 10-15 years ago. At this point I don't think Ubuntu has tangible advantages over Debian for new users.
I really like Slackware's site. It's not sexy, but it's functional, organized, and easy to navigate. The Zsh site is counterintuitive to me with that sidebar-that's-not-really-a-sidebar, and hyperlinks whose text requires the context of a header that is not aligned with them.
I just checked out Ubuntu's web site for comparison, and...uh...now I feel like I owe Debian's web site an apology. I guess the consumer desktop Ubuntu distro doesn't actually have its own web site anymore? I mean, you can get to it from there, but it's hidden under menus, and seems almost like an afterthought. Ubuntu's main web site is bizarre right now, with a prominent green "Download Now" button that does not lead the user anywhere close to downloading Ubuntu, but rather directs them to one of a rotating selection of signup forms to download various technical whitepapers like "A CTO’s guide to real-time Linux". That's a radically different target audience than the last time I went to their web site (and also a weird design anyway).