I believe you're mostly correct. I've also found that particle sizes are also important: keeping things in their natural sizes and chewing them yourself does a

I believe you're mostly correct. I've also found that particle sizes are also important: keeping things in their natural sizes and chewing them yourself does a couple of important things such as mixing them with enzymes, sending signalling about what's coming into the digestive tract, and making food the right size, instead of ultra fine, which provides a different mix of nutrients to the lower parts of the gi tract (and lowers absorbed calories from nuts).