Permafrost melt is a big issue. I wouldn't downplay that. I just dont compare cow farts to coal and oil plants and global transportation. The CO2 is worse in that case.
Oh for sure, I'd say that capitalism in general is pretty wasteful and damaging to the environment. Hard to do much about it as an individual though, we're a kinda destructive species
Increasing population -> more food demand though, and a lot of deforestation is due to livestock, so they have a compounding effect. Methane's lifespan increases as it's emitted, too
Which is why I am against any further investment in imfossil fuel infrastructure. Really the free market is already pushing energy to go green. It's cheaper to go green for power.