A few observations:
- The user who posted that comment may or may not be the person who dropped a downvote.
- That user has 1636 reputation, which isn't a whole lot, and is relatively easy to get.
- Just because one user posts a comment, whether or not they have a lot of rep, doesn't mean they're right, authoritative, or representative of the views of the site moderators or Stack Exchange. However, insofar as reputation has significance about the quality of a user's contributions to the site and the degree to which they're a veteran contributor, 1636 reputation is really not enough to draw any conclusions about authoritativeness.
- Users who can only speak (or, more properly, write in) "broken English" are common on Stack Exchange. If you have difficulty understanding what they mean, ask them what they mean.
- The person who replied to you had posted an answer of his own to the same question, so he might be thereby motivated to downvote your answer to make his look better, even if he didn't have any legitimate reason to downvote your answer (and I can't tell if he did or not, based on his broken English comment).
That said, as far as the actual content of your answer, there are some problems with it:
- The question is about Windows 10. It says so by using the tag windows-10.
- Your answer is about earlier versions of Windows (7/8/8.1). By not testing your answer on Windows 10, you're doing a disservice to the querant. If you don't know if your method works or not on Windows 10, either test it, or don't post it as an answer (a comment might be OK). An answer means, "I know (with fairly good certainty) how to do this and this is how". You may include disclaimers about uncertainty in an answer, but your answer does not address whether you tried it on Windows 10, and how sure you are of it working or not working on Windows 10.
Ultimately, I believe the upvoted answer (the one that presently has a score of 1 and basically says "You can't turn off automatic updates) is the more correct answer, especially as it applies to Windows 10 Home. However, you or someone else would need to actually try your answer to see if it works before claiming it as an answer.
In general, when you have problems understanding the reasoning of other users, it's better to ask them directly (in comments), rather than making a meta post about it. Especially since, in this case, you didn't even attempt to clarify his position with him. We can offer a guess as to his intentions, but not even a moderator can tell you who downvoted the post, and the best person for explaining the meaning of a comment is the original person who wrote it.
To wrap up: I feel that the current score of -1 of your answer is justified, even though I myself did not drop that downvote. I'm not going to downvote it any further, though. It's just a poorly researched answer that doesn't answer the actual question about Windows 10 but rather relies on an old version's behavior and apparently just assumes it'll be the same on Windows 10 (which, as it turns out, it's really not the same).