The issue is that it's not a hobby, but a delivery. For delivery, you have to check commercial compatibility and long-term maintainability, so I'm not sure. Actually, I don't particularly like the XAML model itself, but the problem is the LTS policy and long-term viability. In delivery, technology choice is important. Because what can be maintained later is what matters. I have learned TypeScript, but I don't think you're wrong. It's sufficiently understandable for personal development and hobbies, but from a delivery perspective, it could be considered a risky choice.