This is pretty similar, though the specific one I am thinking of is an image of a "scanned document" and seems to be more focused around workplace. But this is similar enough that it gave me better search terms to find what I was thinking of[0]. I'm not really convinced that this is a legitimate CIA or FBI document but the post I found it under claims it is a "1940s CIA memo on how to sow dysfunction in an infiltrated organization" and I've seen it many times floating around with similar titles.
But yeah, I fully agree that this is essentially about bad faith tactics. My new strategy to dealing with this is to call these people out on their bad faith rather than engaging in the misdirection that they are creating. At least in my experience it seems to push these conversations down from the top spot (but that may be a selection bias).
Most of what's listed as "disinfo agent" tactics there are the general fallacious and bad faith tactics that go on in almost any forum under heated discourse.
[0]https://pastebin.com/irj4Fyd5