With a lot of "stuff" in life, it is best to take the approach: I do not think that much of it. It is the energy of minding my own business.
There are those that will celebrate their achievements in life in their own personal way and it may or may not align with our own personal beliefs or ways in which you or I or others would celebrate. While it may seem premature to celebrate to the OP, it is a matter of a personal choice, and again, best philosophy is to manage your side of the street.
Bottom line: On I-Day, all plebes are THE SAME! No one CARES nor will anyone ask, "When did you receive your LOA, appointment, recruitment, etc., etc.," as on I-Day, it is all in the past and eyes should and will be focused on future.
Celebrate how it suits you and be "observational" of the approach of others, not openly verbal. The only response to someone receiving any accolades in life (whether an LOA, appointment, nomination) or any non-SA accolades is: "Congratulations! I wish you every success in life. How wonderful!"
ALL of the SA applicants have worked hard to achieve the ultimate goal of an appointment and there are many paths to an appointment, recruited athletes, and otherwise...MANY paths lead to I-Day!
Congratulations to those that have been fortunate enough to already have received an LOA, appointment, nomination, etc., and to those still waiting, "Good luck! Trust the process. Be patient. Be hopeful. Celebrate others."
There is a special place and path for all of us in this beautiful (and sometimes weird) world. Be the very best version of yourself and help others to be the very best versions of themselves, too!