It’s a real effect. Wikipedia has a whole section about it in their British cuisine article. A combination of rationing continuing well after the war ended (until 1954), agricultural issues, and a bunch of other stuff put Britain in a position where even after rationing ended, the effects stayed on. https://en.wikipedia.org/wiki/British_cuisine
It’s not the only reason British food has a bad reputation, but it’s part of it.
It’s a real effect. Wikipedia has a whole section about it in their British cuisine article. A combination of rationing continuing well after the war ended (until 1954), agricultural issues, and a bunch of other stuff put Britain in a position where even after rationing ended, the effects stayed on. https://en.wikipedia.org/wiki/British_cuisine
It’s not the only reason British food has a bad reputation, but it’s part of it.