Stable (Debian) means that when you get it working it is less likely to break when you update. A broken installation on a server is quite stressful. Downside for desktop/laptop is that it may not support the latest games and hardware.

Ubuntu is probably more stable than Mint, but less stable than Debian. Which you choose may be more personal preference than objective value.

Yes, but if you are happy with Ubuntu don’t worry about it.

• Open-source purity
• Stable
• Traditional
• Upstream sources for much of Ubuntu

Mint loaded Steam via the package manager and it worked out of the box for me. There have been some games I had to try different versions of Proton with, but I have never found that to be not true for some games.

Suggesting that her risk is going to drop by dropping soothing words for the lefty radicals falls to acknowledge the danger from righty radicals. Having the Cheeto pasting a target on her back means that such words will merely inflame the right even more.

Web search engine of your choice.

Keep in mind that every open source project scratches a different itch… they don’t exist because people wanted to collaborate for collaborations sake… they exist because someone (or some people) wanted a particular software capability. This means that many of them started because one person had that itch, but there are millions of itches so the projects that need your help very likely won’t fit into a convenient “top 100” list. Think about what you are interested in and search for open source software related to that topic.