I sort of agree. But I kind of think it misses the point.
Bike shedding means no decision is made. That is the worst possible outcome as it provides absolutely zero value. Even a wrong decision provides at least some value even if it fails horribly. Maybe we paint the shed black and it burns down due to excessive heat, but it’s a bike shed so who actually cares if we need to rebuild the entire thing and paint it white this time.
And when it comes to bike shedding, getting it “wrong” is by definition already low stakes. It just doesn’t matter a whole lot.
Even the timezone example isn’t really that material IMO. Sure, it’s an extra annoyance to normalize timestamps to locale in every app/debugging query. But in the end it’s just not that big of a deal.
Worse would have been that early team arguing about it for 6mo without implementing anything. Then no one would be employed currently to curse those early developers to begin with.
Often times the only wrong decision is not making a decision. Very rarely are there decisions to be made that are not overtly obvious which are actually material. These exceedingly rare situations are where the winners from losers get sorted out - but that sort of decision in my experience so far happen a handful of times during an entire career.
As I moved up the ladder in my life I’ve often found my job is to basically flip a coin when a decision choice is presented to me. Very rarely is the topic worth me spending any material amount of mental energy on.