Obsidian should not be suggested for general use without the disclaimer that you have to pay if you use it for any work in most cases (unless you work for a very small place or a non-profit). I think their license is probably one of the most unintentionally violated around, kind of can’t believe they’re on flathub.
Commercial use means using Obsidian for revenue-generating or work-related activities within a for‑profit organization that has two or more employees. Government departments and agencies are considered commercial use, unless registered as a non-profit organization.