Absolutely not. If an answer does not address your question, then you do not have to accept it. People may upvote answers because they like it, or because they agree with the statements made, or whatever.
If you are asking about the answer I think you are asking about, in my opinion, it does not address your question at all, it only picks apart an example ...
It's your question and you should choose the answer that you think is best. From the help page "What should I do when someone answers my question?":
As the author of the question, you have an additional option: accepting an answer that you believe is the best solution to your problem.
The key words being you believe. If SE wanted the top-voted answer to ...
I think this depends on the time between them - I have tried to check but I think the notifier runs reasonably frequently but not continuously, so assuming you changed it back before the next check there should be no notification.
If you are wanting to reward two answers, you have earned the Set Bounty privilege, which will allow you to give some of your ...
The preferred mechanism for this is the Bounty. Once you have enough rep you can set a bounty on your question (or other people's questions.)
This highlights the question, and generates interest.
Publishing the question again is definitely frowned upon - this will get closed very quickly, and will likely get you down votes.
As @paj28 commented, editing a ...
I think your answer post is valid. I'm guessing that some of the canned comments on 'requesting clarification' is down to the limited options.
Sure, I can imagine a few minor edits that could make it clearer, but I think it is OK.
It seems to me that there is quite a bit of time wasted on the assumption that people on here (whitehat, blackhat, grey, yellow...) are actually telling the truth about who they are. Honestly, when I read a question I skim over personal details and all the 'fluff' just to figure out what the actual question or answer is -from an objective perspective.
I am happy to explain my reasoning for the move.
Although your suggestion is a perfectly valid, possible cause for the effect that prompted the question, it is not an answer to the question asked.
I truly believe that the asker would benefit from your suggestion, so I converted to a comment.
The reason for it to get converted to a comment(IMHO) is the same as it was made a comment:
It really only applies to that use case/cause, but ignores the actual underlying question:
How come I receive online ads for a product related to a phone call I made?
This was the real question asked, albeit in a round about manner. Your answer in the screenshot ...
"you can’t please all of the people all of the time” -Lydgate
Some answers just attract criticism. This is not a response to the quality of your question, or answer, or criticism thereof: just a reminder that some issues promise only diminishing returns. Learn what you can from asking and answering and move on.