Except that he made Jarvis. Meaning he understands perfectly his tool's abilities and limitations... Which vibe coders don't.

Yes, but he also programmed Jarvis... So...

I feel like you're really forgetting the lore. Do you not remember the iconic "TONY STARK WAS ABLE TO BULD THIS IN A CAVE. WITH A BIX OF SCRAPS." He built a compact arc reactor in a cave. The other man's reply as to why he couldn't do it in a lab with more scientists and equipment was "I'm not Tony Stark."

https://youtu.be/9foB2z_OVHc