I'm more sceptical about WW2 being butterflied away, though. Because the german population will want revanche more likely than not, and whoever ends up controlling germany in place of Hitler might very well end up giving in, whether out of public pressure or individual desire.
Some of the German public wanted revanche. Very little of it wanted revanche badly enough to start a second war.
World War I was a
disaster for Germany. It killed over 2M German soldiers, and left hundreds of thousands mutilated. By the end of the war, the German people were starving. Then the army collapsed under massive Allied attack. And this despite knocking Russia out of the war, and nearly defeating France in 1918. They lost, and they knew it. (The
dolchstosslegende was a stick to beat the SDs with.) And afterwards the country was bankrupt - even before they were loaded with reparation debt.
Britain had less than half as many dead, out of 2/3 the population. And they won. Yet Britain was so traumatized that its intellectual establishment became practically pacifist. ("This House will not fight for King and Country.")
The leadership of the German army were very dubious about starting another war. So was the business elite - they would have to pay for it. The Communists and Social Democrats were opposed. Even many of the Nazis didn't want to jump into another general war; they wanted Germany to re-arm, assert itself as a Great Power, and gain some revision of the Versailles settlements - but by negotiation, not war if possible.
Hitler was the great gambler - and once he was in power, nobody argued with the Fuhrer. Especially after his gambles in the Rhineland, Austria, and Sudetenland all paid off.
Even then, the German people were very quiet about the actual start of the war - there were no parades like in 1914.
After the spectacular victories over Poland, Norway, and France, attitudes changed of course. But that was later.