[simlan]

That is too simplistic. You underestimate the depth of academia. Sure the latest break through Alzheimers study or related research would benefit from a replication. Which is done out of commercial interest anyway.

But your run of the mill niche topic will not have the dollars behind it to replicate everyones research.just because CS/AI research is very convenient to replicate does not mean this can be extended to all research being done.

That is exactly why peer review exists to weed out the implausible and low effort/relevance work. It is not fraud proof because it was not designed to be.