Because what you see that we call mold is the fruit of a vast root system. In hard cheese if you can cut an inch or two in every direction from the mold you likely will get the root system with it. With a soft cheese (or bread) that root system is likely spread through the food pretty thoroughly.
Yeah I don’t know if something better is out there because solid explorer is, well, just solid. Internal storage, local file server, Google drive, one drive, sftp. Absolutely fantastic tool, bought it years ago and it goes on every phone and tablet I’ve had since. I’m really not sure what it would take to move on from it, it fulfills every need I’ve had for a file explorer.