The No Agenda guys had an interesting take on this. There are a lot of people who are new to chickens and aren't use to the slowdown of egg laying for older chickens yet. Changing the nutrients they're getting can shock their system into laying eggs early (their bodies might have evolved to use nutrient changes to signal when Spring is near).

This might be a new hack to get your chickens laying earlier (dramatically changing the feed), but it's likely always been this way and no one noticed until we got a generation of people who got their first chickens during the scamdemic.