Years ago total unknown and unusual to ever celebrate one's birthday, like it is common in the world today, in traditional countries, where only Kings, high leader, teacher would be proper to receive regards, it's a proper day to pay respect and gratitude toward one's parents, reflecting the goodness and spend a day in intensive support.
Atma thought good to bring up the topic so that others could reflect on the proper use of a birth, rebirth reminder day, so that it by gaining right view, might be one of the last "starter of burden and missery for many that comes along with the desire of becoming, gain, taking on occasion, a stand (birth).
Maybe also a good topic for Nyom
blazer , since he probably didn't thought on whom to address with devotion yesterday, right?