Your experience being different than mine does not make mine "not true" nor is what you are saying mutually exclusive with what I am saying. There's most likely a lot of things going on at the same time here- that are interrelated in complex ways, and likely somewhat different in different people.
Lots of research shows that overstimulation of the reward system, e.g. from high satiety foods overrides the feeling of fullness in a way that integrates both what you and I were saying in a coherent way - especially if you think of "mild discomfort" as a state of low stimulation of the reward system [1]. This is probably why so many different seemingly mutually exclusive diet protocols work equally well- anything that restricts some foods and not others, regardless of what they are, lowers the total reward system stimulation from food.
For me, I am still hungry while fasting, but the hunger becomes easier to handle over time. I also notice afterwards that I am full with less food like you noticed, in addition to the other things I mentioned. It is also easier for me to stop eating while still a little hungry after fasting.
In my case years of logging my bodyweight on a digital scale show I only gain weight during stressful events, but then keep it the rest of the time... and if I'm consistently taking cold showers or doing regular short fasts, it prevents that effect and causes gradual weight loss on top of it. So I have fairly convincing data that what I am saying is true for me, but it may not be true for everyone.
[1] https://boingboing.net/2012/03/09/seduced-by-food-obesity-an...