I think we’re agreeing. The point of the sleep parallel is exactly that the content doesn’t matter, and it’s the filtering process that does the work. Brains replay noisy, sometimes incoherent patterns during sleep and the value is in how that replay reshapes connection weights, not in whether the replay is accurate. That’s the same principle you’re describing with the steering signal

I.e sleep replays don’t need to replay Tuesday’s meeting accurately. They just need to activate the relevant pathways so that the strong ones fire and the weak ones don’t. The pattern of what fires versus what doesn’t is the signal. The “content” of the dream is basically irrelevant.