How much of that gas was going to leak anyway? The fields they pipe it from probably don't hold it all in. Any stats on this in Google are buried under reports on the extraction industry, so I can't find anything concrete.
Unfortunately, in many places you can't produce oil without producing gas, and with so much gas right now, there's not a lot of financial incentive to capture it all. If we reduce the need for oil, we'll reduce gas leak emissions as well.
https://response.restoration.noaa.gov/oil-and-chemical-spill...
Why would it be different for other things created by the same processes? And do the pipes let less leak out than if we just left it in the ground?
Oil and gas seeps notwithstanding, the vast majority of reservoirs are stable and likely to remain so over human timescales unless we stick wells into them and start piping fluids around on the surface.