LG says it's opt in, and I think the devil is really in the details about what the consent screen says, but the only way I think it would be a "crazy accusation" is if LG was doing this without consent.
https://www.reddit.com/r/LGOLED/s/x8iBNCPya5
And there are cases of LG re-enabling these ACR options without your consent when they push firmware updates, and even randomly without updating, at which point the TV will send all the past and present ACR data it's harvested from you to LG, without your consent: