I think one of those rug-pull decentralized exchanges is Swaprum’s that did a rug-pull exist and stole funds of the users. They did that by adding a backdoor function which allowed them to steal the funds from the LP of the users.
You may read this article to know further about their rug-pull exit scam.
Another rug-pull scam from a decentralized exchange was done by Merlin Dex, they also stole the funds of the users.
Neither of them are decentralized exchanges, many projects trick many people by using You may read this article to know further about their rug-pull exit scam.
Another rug-pull scam from a decentralized exchange was done by Merlin Dex, they also stole the funds of the users.
Instant swap platform also not decentralized or can be trusted, look at this accusation $6,000 Stuck on Bitsar.com Exchange. Offering 30% reward for recovery
do the tumbling that is very easy instead of sending to XMR and from there to Monero address 1 and from address 1 to address 2. Hey!! I am might make a mistake in that process and the coins might lost.
If you think sending a coin from one to other is hard or risky since you might lost your coins, there's no difference with sending to mixer. 