They are called “Scream” heels because after wearing/walking in them for a short time you scream because you can’t wait to kick them off.
I remember the first pair or 7” (18cm) heels that I bought, I actually thought there was no way I could ever get my feet to bend enough to ever put them on. It took a lot of practice, time and effort to learn to walk while wearing them...and then for only short periods of time. Never did walk very far in them. Now, while I choose to wear 4” heels , along with my 3” to 4” wedge heel sandals in warm weather, for daily activities, I still wear my 5” and 6” heels occasionally around the house (Comfort trumps style at my age). But for the most part, I’ve retired my 7” heels.