I like the little tid bit were she uses lots of spices in consideration of preserving the food.
And that is true, back in the day when food had double digits amount of spices for the more wealthy and the more poor would do the same if they could.
It was mostly because of preservation of the food and marking any rot that may happen as refrigeration with a modern refrigerator is a recent thing so using spices would preserve and extend the shelf life and increase the taste of your food.
If anyone looks at older foods one would see flavors that would be considered odd to use.
This is actually a common misconception which was falsely propagated. It's like the claim that "people thought the Earth was flat before Columbus"
Smoking, drying, salting, and pickling were easy and very common ways to preserve food since ancient times. Sushi comes from preserving fish with salt, vinegar, and rice!
In terms of refrigeration, for some environments digging a basement was enough to provide cooling, while other places would wrap food in clay before burying it underground.
Spices in reality were used cause they add variety and made food taste better. It made the limited selection of local meats and produce more bearable. So spices were highly coveted and expensive.
Also, even if spices covered up rotting food smell (it really doesn't), the food was still rotten. You body would still experience food poisoning, which during unhygienic medieval times, was often lethal.