The latter is what happened, for upwards of ten years. And it wasn't a small fraction of the funding -- almost no funding was allocated to any research not looking at amyloid plaques, because the intellectual giants' (falsified) research was showing that that was by far the most promising avenue to explore.
Again, there were a couple of instances of fraud in one sub-branch of a sub-branch of a field ages ago, and The Internet has decided to turn it into a conspiracy theory.
On the off chance that you're actually a decent, honest person, I urge you to actually go learn about this theory that you're promoting. Go out and actually figure out the truth, because if it turns out that you're wrong about the impact and intentions, you're helping to harm a lot of people.
