Yes.  In a traditional landfill, where the trash is buried each day with a layer of dirt and water is not added these gloves will biodegrade. Landfills of this type are known as “dry” or “tomb” landfills. The fact that no water/moisture is (purposefully) added is of no consequence. A “traditional” landfill receives more than sufficient moisture from the contents of the landfill itself. A little digging into the “dry tomb” type of landfill yielded these supporting statements:
“Far from waste being technically dry (zero moisture content), most sanitary landfill waste includes significant organic matter and other moist materials and may receive direct precipitation during active filling phases. Results of field testing of municipal solid waste in non-arid regions finds moisture contents in the approximate range of 10 to 30% (wet weight basis), which is below field capacity (F’c), and well below saturation (S), which means that most waste has the
capacity to absorb additional liquid. Therefore, the term dry tomb is relative and merely suggests that the moisture content is lower than it would otherwise be if the waste were not encapsulated below and above and did not include daily soil cover layers that tend to compartmentalize the waste.”
https://www.foresternetwork.com/msw-
management/article/13021893/dry-tomb-landfillsthe-past-present-and-possibilities.