Compared to privacy coins Wasabi is just a temporary hack. I think without Confidential Transactions, as the transaction fees grow, privacy will be priced out of Bitcoin's main chain.
— nopara73 (@nopara73) July 6, 2019
Wasabi allows merging several transactions using the so-called CoinJoin functionality. This makes it difficult to trace transactions and amounts of transactions, but has limitations, for example sending a maximum of 0.1 BTC.
In addition, using the Wasabi wallet increases the fees, due to the so-called trilemma, reaching even double-digit amounts.
In the tweets, the creator of Wasabi also points out that privacy coins like Monero (XMR) are much more effective than Bitcoin and that if a user would like optimal privacy, then he should rely on that blockchain.
The Trilemma Blockchain
Much has been said about the subject of anonymity in the blockchain area, but this often involves either higher fees or greater centralisation.
It is a term coined by the founder of Ethereum, Vitalik Buterin, and it means that it is almost impossible to get a blockchain that is equally scalable, decentralised and secure. Every time it focuses on one of these aspects, one of the other two would certainly fail.