The GP's question was rhetorical and his point was that methane can come from both biotic and abiotic processes. > If you read the article, they explain where

The GP's question was rhetorical and his point was that methane can come from both biotic and abiotic processes. > If you read the article, they explain where the methane is coming from. This is technically true in a spatial sense, but not at all true in reference to the GP's point. The article specifies only the location of the source, not whether the source is biotic or abiotic.