+
Here is an article from the US National Library of Medicine, published in 2009.
+
+Declining birth rate in Developed Countries: A radical policy re-think is required
+There is a concern about declining birth rates in both the developing and developed world
+
+
Here is an article from BBC News, published in 2020.
+
+Fertility rate: 'Jaw-dropping' global crash in children being born
+In 1950, women were having an average of 4.7 children in their lifetime... Researchers at the University of Washington's Institute for Health Metrics and Evaluation showed the global fertility rate nearly halved to 2.4 in 2017.
+
+
Here is an article from Our World in Data, published in 2014 and revised in 2017.
+
+Fertility Rate
+Over the last 50 years the global fertility rate has halved.
+
+
+
And when did the Covid-19 pandemic begin?
+This article in Wikipedia states
+
+COVID-19 pandemic
+The novel virus was first identified in an outbreak in the Chinese city of Wuhan in December 2019.
+
+
The decline in fertility has clearly been going on since much earlier: so
+
+- No, Covid vaccines were not the cause of lower fertility rates.
+
+
+
The OP's links provide no more evidence for it than "because we said so." The apparent proof by J.D. Rucker states
+
+Some will argue that I'm not a doctor so I couldn't know. I may not be a doctor, but I'm not a willful idiot, either. The cause is apparent prima facie.
+
+
What does prima facie mean? Again from Wikipedia
+
+Prima facie
+Prima facie ... is a Latin expression meaning at first sight or based on first impression. ... In modern, colloquial and conversational English, a common translation would be "on the face of it".
+
+
So paraphrasing the "evidence", it reads "I'm completely unqualified, but I took one look, and knew that Covid-19 is the cause".
+
In contrast, here is a study published in 2022 by the National Library of Medicine
+
+The impact of COVID-19 vaccines on fertility-A systematic review and meta-analysis
+Background
+Despite literature’s evidence about COVID-19 vaccines' safety, concerns have arisen regarding adverse events, including the possible impact on fertility, accentuated by misinformation and anti-vaccine campaigns. The present study aims to answer the question: Is there any impact of COVID-19 vaccines on the fertility of men and women of reproductive age?
+. . .
+Conclusion
+Based on the studies published so far, there is no scientific proof of any association between COVID-19 vaccines and fertility impairment in men or women.
+
+
+ +
+