The Reform response on that is more horrifying 'His historical perspective of what the UK could have done in the 30s was shared by the vast majority of the British establishment including the BBC of its day, and is probably true.'
That seems to be both wrong in fact - from early 1938 most British people knew war was inevitable, they just wanted to avoid and/or delay it whilst we built up our military capacity. And wrong morally - with 20/20 hindsight the Nazi plans always involved invasions of other European countries so appeasement was always just placating bullies. Its an open debate whether or not if we'd gone to war earlier with less resource and a less clearcut case for action than the invasion of Poland that would have had a better outcome.
But this take seems to be its for other countries to choose if they want to be lead by facists and commit genocide...
Which we all knew was Reform's position but its fucking indefensible. Its also why a Reform takeover of the Tories would mean the end of the Tories. We'd need a new centre right party to evolve to replace them because the Tories would just be a far-right populist party.