What's your basis of conceiving of humans as apex predators?

Going off memory:

• Archeology tells us that human sites were littered with the bones of large and medium-sized animals
• Archeology also suggests that our diets were very meat-heavy from looking at stable isotopes in the bones of ancient humans
• Biology tells us that the sounds of human voices instill more fear in animals than even the sounds of lions
• Biology tells us that we once had the ability to break down fiber, but we have lost that ability after switching to an animal-heavy diet for more than 2-million years
• Anatomy tells us that we have many adaptations to hunt and consume meat, such as: our skeletal structure allows for precise long-distance throwing of heavy objects (such as rocks and spears), high stomach acidity (useful for eating old meat from megafauna that weren't consumed immediately), forward-looking vision (characteristic of predators), the ability to sweat (that allows us to keep cool during persistence hunting), teeth with thin enamel that aren't well-suited to grinding down vegetation, and an intestine-to-height ratio in line with predators

This is starting to sound pretty disingenuous or poorly-informed based on my impressions of the science.

I'm not sure what science you're referring to, but from what I've learned, nutrition science is very much not a mature field of study, especially compared to adjacent disciplines. If you immediately discount the carnivore diet, I would ask you to ask yourself why (for example, is it because "everyone just knows that fruit, vegetables, and grains are healthy for you"?), and approach the question of what humanity's species-appropriate diet is from first principles.