Yes this is scary but it is an old news too.
Soft sciences like biology are filled with statistically incompetent or even outright fraudulent "studies".
People need publications on their resumes and they literally hunt for flukes to publish and they get away with it.
Hard sciences like physics are different because there is not much variety in topics of research and every positive result will be tried to replicate. In biology every god damn molecule can be tried on these poor lab rats and subsequently published, which will not be even tried to replicated because everyone knows that replication will be a failure and waste of time. Somewhat similar situation in hot fields like material science, they too publish a lot of crap which never gets replicated.
The level of fraud in medicine has much more to do with incompatibility between private profit motive and honest science than it does the "softness" of the science.
Studies have shown that medicine and pharmacology (where profit motive is high) are the most fraud-ridden areas of science, whereas plenty of other areas of biology that do more basic (and not directly profitable) research do not suffer from such fraud levels.
You are correct, that in general, the life and social sciences are being harmed by lack of replication. There is a great need to incentivize replication and to de-incentivize "positive" null-hypothesis-rejecting findings. This requires changing the nature of publication processes to publish based upon the quality of methods and not upon whether the results are "interesting" or "ground-breaking", along with journals dedicated to replications unlike most current journals that reject failed replications both upon grounds of lackof novelty and bogus notions that null results are uninterpretable. We also need promotion and tenure processes that give less weight to acquiring external grants which too often are contingent of achieving or having achieved in the past "profitable" findings (broadly defined).
Some of this has started to change due partly to the unlimited publishing space of online journals.