The problem with blaming it on "Gen 1" is that it doesn't address the fundamental issues with a headset.
Apple realized from the start wearing a headset makes users look like a dork and walls them off from reality. They tried to mitigate this by making Vision Pro out of fabric materials and adding AR pass through. None of these have made a difference and it's clear people aren't accepting passthrough as an acceptable method of interaction.
Unlike Apple Watch, which launched at $349, nobody sees $3,499 Vision Pro as a fashionable or useful item due to lack of killer apps. Apple would have to cut the price in half (at least), fix the weight and battery issue, change social acceptance of headsets, and find killer apps. That's incredibly difficult.
Is Vision Pro a success? In the most basic terms, yes. It didn't bomb and there no major setbacks. For VP to be a success, it should have been gated by supply, not demand. Right now, there's more than enough to sell across the U.S. and export globally in the grey market.