I had the exact opposite reaction, i.e. that the sudden concerted effort to suggest Biden had said he was going to do this seemed so forced and fake to me, that it immediately made me think Russia would be the culprit.

But I guess that kind of propaganda generation is semi-uncontrollable and just happens, with whatever seems to work bubbling up as successful (literal) memes replicating.

And there's probably similar people throwing stuff against the wall about why it was Russia until they find something with enough versimilitude that it sticks in the mind.

It also made me revisit the recent book "how to blow up a pipeline" as I had the same question when I heard that title. How can you justify the short term ecological damage against the long term. I assume it's possible, I just hadn't read an in depth argument on it. Interesting to read it and see if the author has been asked to comment yet.

edit, seems they have a film out, so now publicity stunt is a plausible theory:

https://boundingintocomics.com/2022/09/26/how-to-blow-up-a-p...