People are looking at this like it's some major controversy. There has been conflicting teshuvos written thousands of times in the past. I highly doubt any of those involved had anything less the the greatest of intentions. I wish the commenting public was a little more mature.
Just a couple of thoughts on the inyan:
There’s actually not that much written specifically addressing כבוד התורה and רבים צריכים לו. There are Gemaras discussing a heter for a בלן and ספר קודם הרגל which many ראשונים learn is מותר לדברי הכל yet the halacha limaaseh is unclear (עיין עוד דברי רש״י שם במו״ק שפי׳ שהוא גם פסידא).
There are teshuvos discussing צורך מצוה which almost all hold is not a היתר.
There is another place where there is a heter of רבים צריכים לו which I have seen anyone reference and that is in או״ח תקכ״ב there is a heter for someone to be carried in a chair through the crowd on yom tov, even though it is עובדא דחול when it is רבים צריכים לו. The mishna berurah defines it as someone who is giving a drasha in a beis medrash. However the שו״ע הרב and numerous other achronim bring the רשב״א in עבודת הקודש and others who (based on the Gemara of ילתא) include any עסקי רבים and allow even a woman who is needed for עסקי רבים to be carried.
If one assumes that רבים צריכים לו by aveilus has the same definition as רבים צריכים לו by yom tov, it would include other עסקי ציבור and צורכי רבים and Adirei Hatora would certainly seem to qualify.
(It is not surprising that the Gemara and Rishonim by aveilus only focus on examples of Talmud Torah and the excluded cases of Talmud Torah such as a melamed. They are discussing the איסור of an אבל to learn Torah and the exception of רבים צריכים לו. The heter to leave the house of shiva and appear in public in the beis Medrash is incidental.)