Screenix is closed-source. This is a deliberate decision, not a temporary state.
Building polished software on Linux costs real time and money. The Linux desktop has been underserved for years not because the community lacks talent, but because sustaining a product at a high quality bar requires income. Closed-source is what makes that possible.
Open-source is something I respect and contribute to. But open-source and sustainable are not always the same thing. For Screenix to keep shipping at the pace and quality it does, it needs to generate revenue. That is the tradeoff.
If you disagree with that choice, that is fair. But if you want a screen recorder on Linux that competes with the best tools on macOS, this is how it gets built.