The #1 reason I'm still leaning Russia nevertheless is because of an outside factor: Russia isn't screaming bloody murder about it.
If 3/4th of their pipelines had gone up and nobody in the Russian government was involved, Lavrov would already be on a plane to NYC and calling for an emergency UNSC meeting about a terrorist UK/USA attack against Russia's assets.
So far, the most they have produced seems to be a mealy-mouthed question on Zakharova's Telegram channel [0]. Given the Russian Foreign Ministry's modus operandi of blaming the West for anything and everything at the slightest excuse, this sudden quiet is extremely significant.