Turned off by the kill switch, or the key?
Makes no difference. For me at least. I can't see how those two things are even remotely related. (In case you're wondering, I never use the kill switch - just habit to always turn the bike on or off via the key).
Bad news is I'm probably the poster child for the Hot Start Issue problem the Gen3 has. My riding style is I don't commute any more post-covid, we all work from home now, and I don't joyride anymore (one-tank-rides), if I'm on the bike, I'm traveling dawn till dusk riding which involves a lot of start & stopping, and if I'm solo riding there's lots of stopping and starting as I'm always taking pictures of something.
My assessment is after reading all the threads + riding a couple-more thousand miles (this bike is brand new) that cracking open the throttle all the way, wide open, then hitting the starter, seems to work as a simple solution, and I can get the (very warm) bike started on the 2nd or 3rd try.
How Suzuki can release a $20K motorcycle and not know the Gen3 had this Hot Start Issue that affects ALL it's fancy new motorcycles is beyond my level of layperson comprehension.
I've ridden 150,000 miles on Hayabusa's and none of my other (3) Hayabusas had this issue so specific, so pronounced, and
so blatantly obvious as a design failure. I've owned a lot of bikes, and ridden a lot of bikes & bike brands, and the number of those bikes that had a Hot Start Issue. ZERO. None a one. Manufactures have been developing the motorcycle for 138 years, and this is where we're at after 138 years of development? Stuck on a bridge with a huge, long line of cars behind me, wondering why the shiny black motorcycle won't start?
It's pure madness for Suzuki to release its flagship motorcycle, knowing full well it has a Hot Star Issue that affects
every Gen3 Hayabusa around the globe.
But life goes on. Not gonna cry about it. It is what it is. But it is wildly annoying.