I can’t really answer the question of why, but the sample set of people I know who switch to vegetarianism and veganism bears out that the ones who rely in fake meats much more frequently switch back than those who focus on learning to cook foods that don’t imitate meat.
On the counterargument, I did miss cheese quite a bit, and learning to culture my own vegan cheeses hasn’t led to buying animal milk cheeses again, so ymmv