I don’t think this is sinas chinam. I think it is simply misplaced priorities.
When the Aron was being brought back into Jewish hands, Dovid Hamelech danced without boundaries, without shame, without worrying about his image. He had true gladness in his heart. When we have an opportunity to give honor to G-d and His Torah, we should do so without worrying about how we look in other people’s eyes, without being concerned with our own comfort zones. Giving honor to G-d’s Torah, which is what this event is for, should take precedence over your own honor. It matters not what the particular cause of that discomfort may be.