TOI: I did not, and will not, advocate a yeshiva bachur wear jeans into the beis medrash for afternoon seder (although I feel he can shteig just fine if he did). However, I am saying (and you will probably still disagree with me) that I see no problem, with a yeshiva bachur wearing a pair of jeans when he is playing ball, helping his father clean the car for pesach or when engaged in a similar activity.
Your last statement, is not what you have been saying until now. Until now you equated jeans with lower elements of society and not bakovidik, therefore I asked you why they were mutually exclusive. Now, you are using the “uniform” argument. I am stating that I believe there are times when they are appropriate.