This is no surprise. Non-Muslims paying for the upkeep of Muslims is a Qur’anic dictate:
“Fight those who believe not in Allah nor the Last Day, nor hold that forbidden which hath been forbidden by Allah and His Messenger, nor acknowledge the religion of Truth, (even if they are) of the People of the Book, until they pay the Jizya with willing submission, and feel themselves subdued” (Qur’an 9:29).
The caliph Umar said the jizya payments from the dhimmis were the source of the Muslims’ livelihood:
“Narrated Juwairiya bin Qudama at-Tamimi: We said to `Umar bin Al-Khattab, ‘O Chief of the believers! Advise us.’ He said, ‘I advise you to fulfill Allah’s Convention (made with the Dhimmis) as it is the convention of your Prophet and the source of the livelihood of your dependents (i.e. the taxes from the Dhimmis.)’” (Bukhari 4.53.388)
UK jihad preacher Anjem Choudary said in February 2013:
“We are on Jihad Seekers Allowance, We take the Jizya (protection money paid to Muslims by non-Muslims) which is ours anyway. The normal situation is to take money from the Kafir (non-Muslim), isn’t it? So this is normal situation. They give us the money. You work, give us the money. Allah Akbar, we take the money. Hopefully there is no one from the DSS (Department of Social Security) listening. Ah, but you see people will say you are not working. But the normal situation is for you to take money from the Kuffar (non-Muslim) So we take Jihad Seeker’s Allowance.”
“Young Swiss jihadists live on welfare benefits,” SwissInfo, June 12, 2019 (thanks to David):
A new survey has found that about 40% of the 130 known Islamist militants in Switzerland receive welfare payments, including unemployment and disability benefits.
Most of them are young men, living in suburban areas notably in the French-speaking part of the country, mainly unemployed and with low professional skills, according to the study published by the Zurich University of Applied Sciences on Wednesday.