[frederikvs]

Even if atmospheric methane has not increased in recent times, it may be a good idea to try and reduce it.

We have too much of one greenhouse gas, and so far we've been unable to change that. Reducing another greenhouse gas could partially compensate for that.

[Doji]

Sorry I didn't mean to say that atmospheric methane has not increased. It definitely has, as other commenters have pointed out. However, I contend that most of this increase is likely from other factors. Melting of the polar ice caps, factory emissions, etc.