If you are questioning is lists.archlinux.org a scam, you can rest easy. This site serves as the official mailing list archive for the Arch Linux project. Unlike commercial platforms that demand personal data or financial transactions, this site behaves exactly as you would expect from a non-profit, volunteer-led technical resource.
Most lists.archlinux.org reviews are unnecessary because the domain is a fundamental part of the Linux ecosystem. It does not try to sell you anything or masquerade as a private entity. The lack of traditional corporate legal pages is standard for hobbyist and community infrastructure, not a sign that lists.archlinux.org is fake. As long as you are using the site to browse or subscribe to development discussions, you are interacting with legitimate project infrastructure. Always ensure you are on the legitimate archlinux.org domain before entering credentials, as you would with any specialized technical portal.