I wouldn’t say that. Sure, any of the coinjoin coordinators could be compromised by specific parties, but chances are you’ll have better privacy than just leaving everything easy to trace by anyone.
Is it? If you do a bad coinjoin, then your utxo will stick out like a sore thumb in the ledger. Chainalysis might ask itself :"why would this person do a coinjoin?" A big anonymity set is crucial imo.