This seems like you googled that and took the sponsored link as gospel. Every article I've seen mentions Crocs and tons of other brands over birks. I'm not even an advocate of Crocs, was just curious as I didn't believe the birks comment and have looked in to shoes a ton over the years. Birks and toe drop are a real thing and a pain
The hospital I work in just BANNED regular Crocs because the holes on the top and sides don't protect the feet from splashes/spills/drops. It's been so interesting to see Crocs in the hospital just disappear overnight.