Getting a handle on methane emissions and then limiting them through measures such as regulation provide immediate benefits partly because of the relatively shorter time frame that methane spends in the atmosphere compared to CO2 and because of their high warming potential, as you just talked about.
If we could get a better handle on methane emissions and then deal with them more effectively through regulations and other measures, that would go a long way. It would provide immediate benefits, as immediate as you can get on an issue like climate change, which is long term. Dropping emissions on methane saves a lot over a long period of time because of the difference between it and CO2 in terms of its residency time in the atmosphere.