SJS,
Your points are, of course, valid. “Charaidim/right wing orthodox” have been printing, discussing, and educating about the holocaust since its occurrence. A recent program has been developed for holocaust studies within the curriculum of yeshivos and Bais Yaakovs. A major component of pre – Tisha B’av programming in the summer camps has been focusing on the holocaust.
The issue under discussion is merely about setting aside a specific day for its commemoration.