You bring up a fantastic point. That's what progress is. Without any real engineering staff, the EBR bikes lost ALL progress almost a decade ago
There is no amount of testing that can address every situation on a machine. Billion dollar spacecrafts fail too. Once EBR manufactured and assembled it's parts in 2014, thats it. No progress, no more revisions, no updates. For instance, the torque specs for the EBR's front rotor bolts were updated in 2016. I don't know why (I'm no engineer), but it's pretty scary the new Buell(tm)'s "lead engineer" doesn't know either.
They're assembling "new" bikes from EVERY single EBR part that is over 8 years old. Any issue, common or not, will never be revised to be a better part.
Including safety issues. They aren't just standing still, the bar is always moving. The new Buell (tm) is going backwards
Even worse than that, is your exact point, 34:19

The evap solonoid would be a cheap and simple change to make. But even that simple 'upgrade' is in question. Some self taught mechanic (without
any degree) bought a slightly better solonoid and put it on his buddies bike, tested it himself for a second or two, then picked up his FB megaphone to sell it. Maybe it works? Maybe it doesn't? Maybe it's worse. Send it to the EPA, then we'll know.
Nostrum anyone?