In three of the four weeks since WWDC, the conversion rate for OmniFocus on visionOS has been above 71%. (In the other week it was still above 62%, so the overall conversion rate for the full period is above 70%.)
I'm not suggesting everyone run out and make visionOS apps today: the total market size is still small. But it's a good sign for customer enthusiasm on the platform.
(As a company who specialized in building NeXT apps, we're no strangers to tiny markets with enthusiastic customers!)