It takes some time to become familiar with new APIs etc. But with a new product category such as AR/VR/spatial computing with so many new paradigms I would think that getting real hands on experience early is vital.
Otherwise developers end up wasting a lot of time creating concepts that ultimately don’t work well in real world use. The visionOS simulator is no substitute for actually wearing a headset.
The fact that developers aren’t grabbing every chance to get hands on with the hardware doesn’t sound great to me. I suppose the main question is is that because Apple are not handling developer access well enough (I’ve seen a lot of complaints about the limited locations of the labs), or is it because developers are not interested in the platform.