This is nonsense. The crazy gas prices had two main causes: insufficient gas buffers during the uptick of the economy after Corona, and Russia closing part of its huge gas supply to Europe.
this is true
> Russia closing part of its huge gas supply to Europe
this isn't, afaik. Russia doesn't sell on spot market, they prefer long term futures contracts, on which they reliably deliver. They delivered on their 2021 commitments a bit earlier, hence they closed off the valves
Basically, the gas supplies were low during summer, but the spot prices were significantly above long term average, so energy companies delayed their purchases, hoping the price will come back down soon. It didn't, reserves dried up, and everybody was forced to buy at the same time