Methane is a nothingburger. It has a short residence time in the atmosphere, being chemically oxidized into carbon dioxide and water vapor, which have no potential for increased greenhouse effect. This is all virtue-signalling superstition.

And if the sun heats up the tundra, it will outgas methane anyway. We are like mice trying to regulate the behavior of sun, moon, stars, clouds, rain, and floods. When has it ever been true that our works are greater than nature's power? (The only example I can bring to mind are the Dutch dikes---and I'm not talking about manly women. A defense only.)