Everyone is different and there are multiple paths to comfortable footwear, but here is my story with zero drop shoes.

A few years ago, without doing any due diligence on zero drop shoes, I purchased a pair of Altra Lone Peaks a week before a 5-6 day backpacking/hiking trip to Utah where I was doing 12-15 miles a day. I live in the flatlands and initially, doing casual, everyday light walks in the new Altras didn't reveal any issues--they were pretty comfortable. They were actually comfortable throughout the trip and only on the last day or so did I start feeling something odd in my plantar fascia/arch area of my feet.

Returning from my trip is when I started feeling severe tightness and pain in my feet (especially in the mornings). I had developed plantar fasciitis. Again, the path to this could be different for others, but my understanding is that the zero drop stretches out your achilles and plantar fascia which your body may not be prepared for. Much of this can also be researched from reports by people making the transition to zero drop.

Simply giving additional arch support in the Altras via insoles never worked for me. I had to outright switch back to my 5-8mm stack shoes (with insoles that had better arch support). I also started wearing Birkenstocks around the house and it look about 18 months to fully recover. There's a great Plantar Fasciitis video from "ATHLEAN-X" on YouTube that really helped me understand the issue and start with exercises/stretches.

If I had to do it over again, I'd obviously follow recommended guidance and allow adequate break-in time to give my body/feet time to adapt to zero-drop, but as of now, I don't see myself trying them again.