The FDA themselves stated that Ivermectin does not cause fertility, which I assume you trust or else you wouldn't have made this topic.
A 2011 study out of Nigeria that evaluated 37 subjects is not evidence that ivermectin, an FDA approved drug for treating parasites in animals and humans, is linked to male infertility. According to the U.S. regulator, infertility is not a known side effect of the drug...
www.reuters.com
The human study referenced in that article was flawed as it had no control group and a small sample size.
The two animal studies in that "article" have not been repeated, but even if they were, animal studies mg/kg doses do not always translate into human doses. Either way, it's not something to dismiss.
The amount of evidence for potential toxic side effects is far weaker than it's evidence for antiparasitic and antiviral activity. It bears repeating at this point that Ivermectin is on the WHO’s list of essential medicines, has been given 3.7 billion times around the globe, and has won the Nobel prize.