So easy to make this a false flag. The intelligence agencies are so corrupt and have a history with this sort of thing (e.g. fast and furious), that you just can't take anything they say at face value anymore. In these times, there are several plausible alternative explanations: for example, to get us (more) used to scarcity/socialism, to create a "problem" that is solved by pushing even harder for green energy, to distract from other problems, etc etc

Im an engineer but no expert in gas and oil distribution. Even though they may have been hacked, those are computers controlling mechanical systems. I cannot believe those mechanical systems cannot be manually controlled while any computer-based damage is repaired.

For reasons I don't understand, this could be as the news media is reporting, Could be. But they have taught us all to be highly skeptical.