Yeah, the UI is a problem. I also made the mistake of working in Unity on a 4K monitor and forgot that WebGL would drastically cut the resolution.))
I'm glad you liked the idea! I had a thought about making a cozy game about sorting animals—cats, dogs, birds, etc.—with a similar conveyor mechanic. I think with its simpler feel, we could later complicate it by adding multiple conveyors right from the start.))