I think though that the interpretation of religious tenets and the character of decrees by religious authorities change over time. Evangelists in America claim God told them they ought to buy private jets. As a result I don't think Materialism is incompatible with religion. I don't think Materialism is atheistic or religious in character.
Afaik he said to not abandon it entirely. He thought we had a sort of new religion in each world, materialism in the west.