Plaque is the end-cause. What's debatable is why it accumulates and what pharmaceuticals and interventions we doctors should prescribe for our patients, not whether it's present or not.
Isn't cholesterol released into the bloodstream to protect arteries when it gets acidic, and over time turning into plaque buildup? Also, going the other way doesn't help either because if you got a spike in acid your arteries wouldn't cope with the overload
I'm not sure what you're referring to re: Alzheimer's plaque. They're not the same type of "plaque". Alzheimer's is basically little pieces of protein that clumped together and the body couldn't get rid of it. Generally, pH changes can affect proteins and lead to their clumping, but that's not the mechanism here. It's when there's too much of these abnormal proteins that normally get filtered away. It's generally called "amyloidosis". There's many theories for why: some think it's linked to bacteria from our mouths getting into the brain, some think it's because the glymphatic system got clogged (healthy flow of CSF fluid, like clogging of certain holes where it's supposed to flow more freely, etc, etc). Not the same substance as arterial plaque.