EU and the USA have no interest to provoke methane leaks, as it is a very highly greenhouse effect gas. Putin, on the other hand, does not care.
EU has been adamant that this was not the good time to go all-coal for example.
They could have done just that but no, the whole population and the politics are against (except in a few illiberal "democracies").
Even in the US there is a lot of work done recently to patch the methane leaks in gas fields, for example, which have been spotted as big emitters (by negligence or lack of enforcement).
This sounds like a business sustainability decision rather than out of concern for the environment.
"Sustainability" (but not in the planet-preserving / extinction-event-avoiding meaning) of fossil fuel over the next century is not at all a problem, if we wished so.
/s but not really...