Seeing it in person made the difference for me too, kinda like how @ivanc41 mentioned. Was skeptical until I actually tried the cooling gear they had set up. Works way better than just reading about it.
Demo setups are meant to impress, but they can still show real use. Ivanc41 gets it, you gotta see the gear under load to know. Trust your own hands-on test more than any sales pitch.
Yeah a demo changed your mind, but is it actually that big of a deal? Demos are built to make things look amazing. Real life use is never as smooth. It's cool they showed something fun, but I still doubt it's anything game changing. Maybe we're all just getting hyped over nothing again.