NoCode for real real businesses?

Hi! I'm a coder here and love building everything from scratch with code myself. However, I keep reading about all these no code platforms and watching tutorial videos about how you can even build a Reddit platform on them. Like crazy! I always wonder though how true and scalable these are. Like are they only good for building something that works until say 100 or 1000 users and after that it fails? Are they filled with random bugs? Does anyone here actually know about no code platforms being used as a real tech product for a real money making business? Do share if you know any examples!