And so far we do not have any. So until then this story is pushed way further than it has any right to. Weinstein thrives on the censorship, but the fact of the matter is that there simply is no proven efficacy and until then this has no business being promoted to a mainstream audience who might get themselves into a lot of trouble, or who might forego getting vaccinated.
If ivermectin was authorized as a viable treatment the vaccines receiving emergency use authorisation wouldn't have been possible. There were and still are billions on the line.
None of them are as effective as Ivermectin (allegedly). It is only logical that efficacy is also important.
Same as in coding, you eventually reach a point where you learn that when in doubt, you must read the source.