All perfect praise be to Allaah, the Lord of the worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and messenger.
Undoubtedly, the Ahbash are a deviant and misguided group as stated in Fataawa 84336 and 91557, but we cannot say that they have Masonic links without clear evidence, which we do not have.
It is enough for you to highlight their apparent deviant state that is clear in their sayings and actions if you want to warn people against them. By doing so, you will not turn away those who want to embrace Islam if you explain their deviation wisely and in a scholarly manner. In fact, corruption lies in keeping quiet about them and new converts may be deceived by them.
Therefore, you must warn people against them and disclose their reality seeking the assistance of the scholars who are well aware of their state.
Allaah Knows best.