No, you are the one providing misinformation. The explanation you linked to is completely wrong. “offline” actually means that you are silently and automatically “opted-in”, so basically what everybody except Mozilla calls opt-out.

However, this does not change anything to the fact that these “suggestions” were silently enabled in Firefox 92, and that the opt-in dialog box was introduced only in Firefox 93. In addition, this opt-in dialog is not shown if you left your locale as the default “en-US” (“offline” = opt-out).

From your comment on this other post and the downvotes it generated on said post, while this post and your comment get upvoted, I guess neither you nor anybody even checked to see what “offline” means…

If you scrolled down a little from the link you provided, you would have seen that “offline” really means:

• Do NOT show the “opt-in” dialog to the user.
• Silently opt-in user to “suggestions”

So basically “offline” = “opt-out” and not opt-in.