I've been smoking since the 90s. I've home grown myself and worked at dispensaries and commercial growers.
Just cause it says indica on the package that don't mean that's what it is 🤣
Different weed *can* have different effects, but it's way more complicated than I/S. Terpene profiles are way more complex than a simple binary. It's like trying to define every vehicle that exists as a car or a bicycle.
Indica vs Sativa is more about the physical structure of the plants, short & stout vs tall and skinny.