Comment by Retric

“can and have” sure not everything that makes sperm look feeble in a microscope actually represents an issue.

Extremely poor is a qualifier that isn’t backed up by your previous statements or actual scientific studies. Further births are very late in the process, rates of success is a critical metric here.

There’s significant research in trying to artificially create similar selection criteria because it increases the odds of a successful pregnancy and live birth. https://pmc.ncbi.nlm.nih.gov/articles/PMC7365522/

So if you still disagree, how about presenting some actual evidence.