If those standing behind the imam are not of sound mind and intellect, what is obligatory in that case?

Question:
Honorable Shaykh, may Allah grant you success. He says: In one of the mosques, those who stand behind the imam are people who have a deficiency in their minds and do not perform the prayer well. They always come early and sit behind the imam, and no one from the congregation has spoken to them out of consideration for their feelings. Is it permissible for us to say that we should move them from that place, acting on the saying of the Prophet ?

Answer:
You are the ones who are negligent. Why do you not move forward? You are leaving the space for these people. You are the ones who are negligent. The Messenger encouraged you to move forward. He said, "Move forward and complete the prayer with me, and let those behind you follow you." And people will continue to lag behind until Allah causes them to lag behind. So strive to move forward. May Allah bless you. Be behind the imam. Take your places behind the imam. Move forward. This is what the Messenger (peace and blessings be upon him) encouraged. As for you sitting in your house and being occupied with your affairs, then coming as the last of the people and trying to push people out of their places, no, this is not permissible. Yes. Prepared by the Project of the Senior Scholars of Kuwait, may Allah protect it with tawhid (the oneness of Allah) and the Sunnah.