I seem to remember a lot of hype about room-temperature superconductors, that croaked upon [lack of] replication. That wasn't too long ago.

Before that, cold fusion.

We still have the ion drive that doesn't require fuel. I don't think it has ever been successfully replicated, but I think that it also hasn't been successfully repudiated, either.

This kind of thing has been going on for a long time. I suspect that not all of it is deliberate fraud, but rather, people wanting their preconceived bias to be satisfied.

Replicating superconductor experiment gives you the conductor and the skill.

Both of them are useful as is.

Replicating a social experiment, when successful, don't give you anything new.