Practical advice- Share your app on product hunt and reddit community. You will get the genuine feedback from the users. Based on that you can make the changes. This will definitely work.
What this really shows is how fragile "smart" devices are- good hardware, but useless once the cloud goes away. Local first + open systems feel like a preference and more like a necessity now. Also, agree on latency- even small delays feel very noticeable in a robot.
In my views, you don't need an unsolved filed- you need an unexplored angle. Most "crowded" hobbies still have some gaps who build tools, document deeply, or connect ideas across domains. The average isn't in the hobby itself, but it how you approach it.
It is really thought provoking. Interesting how lafargue saw machines as a path to freedom, yet today we fear them for the opposite reason. Maybe the real issuen't AI replacing work, but our inability to redefine what "valuable time" looks like without it.