I didn't know it was fanless. The Intel MBAs had a fan, yet they had the same weight as the 13inch M2 MBA, so they could have added a fan to the 15inch MBA without making it heavier. I was almost decided to buy it, after my first disappointment when learning about its weight (explained by the aluminum preference discussed in the interview, but my wish is lightness, not aluminum). But now, knowing that it's fanless and it throttles (unlike my old 2010 Intel MBA, which triggered its fans instead of throttling), I think I'm passing at least until next year, and I'm keeping my mid-2018 i9 MBP 15inch (which BTW weighs 1.83kg, only 300gr more than new the 15inch MBA).
If Apple won't release a 15inch Macbook with fan and with a weight less than 2kg, I'll need to wait for a long time.