Lol!
Thing is, it's not completely farfetched. Antibiotics, birth control hormones, pesticides-all have been found in many locations in the water supply here in the USA.
That being said, you may very well be right.
It IS winter here, and there are SO many other factors that can influence egg laying!
I've also had very low egg numbers, starting early summer of 2022. We've tried everything. Free choice feed (16% layer pellets), free choice Poultrycal oystershell, good water 24/7, ventilation fan and opened windows in summer, ventilation windows but no drafts in winter, large, grassy, sunny...
This is a good explanation of the finer points of space per chicken. Mentions several facts often overlooked when deciding available space for your chickens.