It's not about just the number of sperms males produce. It is about the most crucial male hormone: testosterone. It's strange that the article doesn't speak about it.

If you read up on the importance of healthy testosterone levels in both males and females you'll see why we should all be very worried about disrupting that endocrine balance.

Why would you not assume this is a bad thing? Sperm are needed for the survival of our species; a significant drop will cause problems to that survival, a drop to zero will cause extinction.

I'm upset with your question. Technology is moving faster than the pace of evolution! We know very little of how evolution works to be certain we will adapt.

Besides, why are you so keen on rendering the people who were not born before the age of current tech as a class unfit in our current context?