All I can say is that every chili can subtly enhance the flavor in a particular way that another chili can’t. So Indian dry red chili has it’s own particular flavor and I can certainly tell a difference in the taste when I use other chili. That said, this is the easiest thing to substitute in Indian cooking if you run out. You can always use crushed red pepper that may be hanging around from pizza takeouts.
Laal Mirch (Dry Red Chilli)