There's nothing wrong with a developmental niche like this exploring alternatives. It's like using a Raspberry Pi for development, or organizing a Linux distribution with a specific, though obscure purpose. The very process of updating a functional, lightweight environment like AmigaOS using modern software tools and running it on modern hardware could yield insights that would benefit computing in a wider range. Will AmigaOS return to any sort of prominence? Very unlikely, but it suits the needs of a few, dedicated computing hobbyists.