It matters because the more popular a plant based diet becomes the more animals and their suffering are taken out of the picture. You have a ton of very popular proper in society claiming they are vegan but then they wear leather, promote products tested on animals and who often then turn their back on a plant based diet and are seen eating a huge steak a few weeks later. Veganism is about ending animal exploration and if we erase their plight from the tern created to make it visible we are doing them a disservice it is not about celebrating another human it is abut ending what horrible things we do to non humans.
It is great that they are trying but think for a minute if the victims were human and human children would we still be celebrating a solitary effort or saying that it is nice but that more needs to be done ?