Then if we are using bitcoin to transact, we can still use it but with the support of a mixer does it? but maybe using privacy coin is much more efficient to use compared to paying transaction fees from bitcoin mixers and websites that is in accordance with it in the market. I want to know, what is "shilling veil" means?
You can use bitcoin mixer for getting untraceable transactions but you know mixer is also sometimes traceable. I have seen a guy mentioning it in the bitcoin technical discussion. That is where privacy coins are needed.
I am pretty sure with cyber security firms such as CipherTrace they can track any bitcoin transaction even if a mixer is used.