Praise be to Allah, and peace and blessings be upon the Messenger of Allah.
We do not know of any authentic hadith from the Prophet ﷺ mentioning the emergence of a specific group before the Dajjal whose role would be to pave the way for his emergence. Therefore, it is not correct to attribute such a claim to the Prophetic Sunnah.
As for linking this supposed group to the Freemasons and claiming that what they do in our time is preparation for the emergence of the Dajjal, there is no evidence for this. Rather, it is an attempt to speak about matters without knowledge and to make unsupported assumptions.
What has been authentically established in the hadiths is that the emergence of the Dajjal will be preceded by great events and trials, including disagreement and division among people, weakness in religion, severe trials, and the great battle between the Muslims and the Romans. Then Constantinople will be conquered, and after that the Dajjal will emerge.
It has also been authentically established that he will emerge from the direction of the East, from the land of Khurasan, and that seventy thousand Jews from Isfahan will follow him. He will appear at a time when trials and disturbances have become widespread.
Among the authentic hadiths concerning this is the statement of the Prophet ﷺ in the hadith of Abu Hurayrah, may Allah be pleased with him: “The Hour will not be established until the Romans descend at Al-A'maq or Dabiq...”, in which the emergence of the Dajjal after those events is mentioned.
It is also authentically reported that he ﷺ said: “He will only emerge because of an anger with which he becomes angry,” and it is established that he will be killed at the hands of Jesus, son of Mary, peace be upon him.
Therefore, it is obligatory to adhere to what has been established in the texts and not identify any contemporary group as paving the way for the emergence of the Dajjal without Islamic evidence. It is likewise not permissible to assert with certainty that contemporary political or social events are specific signs of his emergence, because matters of the unseen cannot be established through speculation and conjecture.
And Allah knows best.