

Nice project!
Only somewhat related, but for myself personally, I’ve realized that the default UI for YouTube promotes doom scrolling as much as it possibly can. It seems to have a negative effect on my mental health and habits. So I live mostly without YouTube now, with only some occasional (once every few weeks), externally linked videos, that I usually download via yt-dlp or just quickly watch online. For online watching, I broke the page so bad with uBO that the page barely works, and there are no recommendations or after-you-finished-viewing transitions.
This approach seems to work well. I find YT to be a really dangerous place. In one phrase, “sweet death”.

I think it’s because the for-profit nature of the company may not create an actual community of FOSS enthusiasts around it. So if something were to happen to the business side of Slint-the-company, there would not be a strong community with known leaders and vision to save the situation. It’s not like this is guaranteed for FOSS projects, but it’s much more likely there. Single-person FOSS projects are scary to me for this reason as well.
That is the biggest factor for me. (There are other important factors, too.)