I would like to hear the views of PSE community members on the deletion of my two upvoted answers to this question. I am especially interested in the views of ordinary (non-moderator) members of the PSE community
Please note that the questioner already had the answer to their problem, as well as an explanation of the answer. They did not think the explanation was correct because it involved accelerating reference frames.
I made one post showing how the answer to the problem could be derived using relative motion, without invoking reference frames. In the comments I said that although the particles were indeed accelerating relative to each other, this was irrelevant. The questioner still seemed perplexed, so I posted a second approach that reached the same conclusion without using relative motion at all, although it did require a knowledge of calculus.
My two answers received three and four upvotes respectively, and no down votes.
Ten hours after I gave my answers, the question was closed and my answers were both deleted. The justification given for deleting my posts was that the questioner had not explicitly asked for alternative solutions to the problem so "this is not an answer". Please note that I am not asking for comments on the closure of the question, only on the deletion of my answers.