Replication is unpaid QA on someone else's product. Nobody gets tenure for finding the bug, hence the field has been meaning to get around to it for 20 years.
“It’s not novel”.
Assume that n% of foundational studies are demonstrably incorrect if replication were attempted. Then if you replicate X foundational studies, there's a 1 - (1-n/100)^X chance that you'll show one foundational study to be incorrect. Then I think you just need to find an advisor who believes the incorrectness rate n, and the replication attempts X is high enough for you to revert a foundational study over the course of your PhD.
But perhaps it is not as big a shame for them as some think it should be...