Please I may not be the only lame man here I've longing to know why People typically use bitcoin mixers to mask any previous "questionable" transactions from the bitcoin that they are likely cashing out in their real name. Now let me know about purpose of mixing bitcoins.
They just wanna keep their privacy and is this a problem? The main role of the mixer to eliminate your real address that already used to send bitcoin. Some people are thinking their privacy matters a lot.
That's why they have managed to mixed their address to get the best privacy and they don't wanna get traced by unknown person or scammer maybe.