He’s a nut, but until some governmental entity publishes any substantive findings and formal accusations, conspiracy theories will continue to circulate. Unless there is a reckoning in the Kremlin at some point, we may never know. In reading up on this stuff more, it seems like Russia has probably done this before: “two explosions on the Mozdok–Tbilisi natural gas pipeline in North Ossetia on January 22, 2006. The explosions suspended gas supply to Georgia at a time when the weather was particularly cold, leading to allegations of deliberate energy blackmail carried out by the Russian government The explosions took place with the backdrop of the 2006 Russia-Ukraine gas crisis that same month. They also coincided with sabotage on electricity lines just several miles from the pipeline, which descended large parts of Georgia into darkness. Due to these suspicious coincidences, Georgia accused Russia of conducting deliberate acts of sabotage with the aim of forcing the nation into surrendering its pipelines to Gazprom – the Russian state-owned monopoly.” https://en.wikipedia.org/wiki/2006_Russia%E2%80%93Georgia_energy_crisis