Alan Turing's biggest fan remains the real enigma

This is probably true of the Germany army, but not the air force, and certainly not the navy.

Furthermore, it does not demonstrate your point that "Bletchley Park ... had no material impact on the war", which is demonstrably false. See for example https://en.wikipedia.org/wiki/Ultra for a list of some contributions; but it is surely obvious that reading the enemy's communications is going to be of great help in a war.

> Germany had no chance of winning.

True once they were fighting UK + USSR + USA; the odds against them were too great.

That's simply not true, even if Enigma has been somewhat mythologised.

First, consider that time was of the essence. The Germans were working on their own nuclear weapon, and had enough traction that this was of great concern to the allied leadership. So the question is not, would the soviets have won, but rather would they have won *before the germans completed their nuclear weapon*.

So the real question is - did Enigma distract and delay the germans from this goal?

It did. As just one example, breaking Enigma is widely held to weakened the U-boats hold on the North Atlantic, without which the D-Day landings could have been delayed by a year or even longer, as the North Atlantic was the route that brought ammunition, fuel, food and troops to Britain from America.

What would the germans have done with an extra year with no western front to worry about?

At the very least, they would have been able to redeploy resources to the easter front, which would certainly have slowed the russians down. And at the worst, they could have completed their own atom bomb, with dire consequences to the rest of the world.

It's certainly hyperbole to say that Enigma won the war. But it's also hyperbole to say - as you do - that Engima machine had no material impact on the war.

Should they have spent the money on trucks or information?

Did Enigma do anything or did it merely prevent losses?

Should they have invested in spies or computers?

There is another possibility…was enigma merely a front to mask the real source of the information—-some human source? Initially its value could have been as a “check” on the intelligence coming in from a German source. The fact that it led to the development of computing must be entirely due to Alan Turing’s influence.

I think they meant to the wider public.