Sure, I am not trusting wasabi very much with their new coinjoin, but I wont trashtalk them without any proof... if someone want's to be speculation king...go for it 
What do you consider as proof?For me, their word is proof enough. https://blog.wasabiwallet.io/zksnacks-blacklisting-update/
In my humble opinion, the one speculating here is someone else.
They have already said they will start blacklisting certain UTXOs they don't like. It wasn't me, n0nce, o_e_l_e_o, or anyone else. Wasabi said it on their blog. They are fully aware of the consequences and anger of their community for this blacklisting, but they are ok with it. They don't believe anonymity is possible or desirable. They are a service advertising privacy, but they believe anonymous coins aren't good. If you don't consider that to be proof, OK, that's your opinion.