That's bit discriminatory, old chap.
OP did not, he was simply thanking, those who answered his question and showed the equation used. Why thank someone who gave you a criticizing comment with too little information? "Like go figure it out on your own." maybe math isn't one of the op strong suits.
He didn't exclude anyone from participating or called anyone names, or treated someone less favorably than another, etc
It would have been discriminatory to thank only one person and not all 5, when 5 answered the question, especially thanking after all 5 answers were posted. This is an example of treating someone less favorably than another.
example I just gave is Similar , BUT, not the same with your comment, where yours was referring to all people regardless to whether they answered the question or not, including those who only told OP to find out themselves or making comments about the poster that had nothing to do with answering the question.
Telling the op to go somewhere else to find out themselves was the exclusion
Question was posted in the "GENERAL CHAT" after all. If it had been in the branch related to family cycling, then pointing to the general chat as place to post it, would still included the OP if that had been the case.
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Following is related to a comment by another poster who was wondering, why you would want to know what your neighbor is doing.
It is a neighborly thing to do to keep track of one another where about, as they come and go, to ensure that if there was a change in their pattern, that you could be prompted to look to ensure they are ok and did not get injured while running/cycling etc.
Many people in the industrial world, forgot how to be good neighbors.
I know I would appreciate my neighbor looking out for my well being as the op was doing, Then we do not have enough information to make that assessment now do we?