Hi Waggles and welcome to the Forum. As far as being welcome with open arms for killing a Sasquatch? No that's not what I've been thinking at all. In fact the opposite may be true. There will be no ticker tape parade for the one who brings one in by force. That's why my stress is on finding one that is already dead.
As far as trying to pull the trigger on a live one? The issue there, and it's a serious one, broaches the subject of one's certainty that what they are taking aim at is NOT a guy in a suit! At what point does that determination occur to the degree that a hunter would actually pull the trigger? How close does the creature have to be? At twenty yards would there even be enough time to get one shot off? At a hundred yards with a scope can one honestly say it's not a Human in a suit? There's a lot more to say on this as the philosophical, psychological, social, and ethitcal issues are REAL. So much more so than shooting say, a bear, or an Elk. Find a dead one? Fine. Otherwise? It is at least an hugely serious social and moral issue.