Rambam Hilchos Talmud Torah chapter three halacha 10. (my translation, sorry no ivrit typing skills) “one who sets his aim to toil in Torah, to do no work, and to be sustained by tzedaka, he profanes the name (hillul Hashem), debases the Torah, snuffs out the light of the das, causes harm to himself and bars his life from olam haba. The Sages said one who benefits from Torah removes his life from the world. Furthermore they commanded and said, do not make them a crown to be elevated thereby nor a shovel to dig with. Furthermore they commanded and said love work and despise the office of rabbanut, for any torah that is without work is destined to be cancelled , and it causes sin. Such a person will ultimately become a robbber, a public menace”
It seems we can add the Rambam to the growing list of MOs.