I would like to propose a wonderful explanation based on an incredible insight found in the sefer Ohev Yisrael authored by the great Rabbi of Apta, zy”a. He addresses the statement in the Gemara cited above that when Moshe ascended to the heavens, he found HKB”H attaching crowns to the letters. As a loyal servant in the presence of his master, I would like to expand on his sacred words based on what the Gemara teaches us elsewhere (Menachos 29b): אמר רבא שבעה אותיות צריכות שלשה זיונין, ואלו הן שעטנ"ז ג"ץ—Rava said: Seven letters require three tagin (adornments on top of the letters resembling miniatures of the letter “zayin”) each. They are the “shin,” “ayin,” “tet,” “nun,” “gimel,” and (both forms of the) “tzadi.”
In Igeres HaTiyul, Rabeinu Chaim, the brother of the Maharal of Prague, ztz”l, explains why these specific seven letters require “tagin”: It is because the letters שעטנ"ז ג"ץ are an anagram for three prosecutors named שט"ן ע"ז ג"ץ. In the gloss of Tiyul BaPardes, the esteemed Rabbi of Shimluya, ztz”l, provides a wonderful rationale for this tradition. Since the “tagin” are miniatures of the letter “zayin,” they function as "כלי זיין"—weapons that defend and protect Yisrael against the three klipos of שט"ן ע"ז ג"ץ.
Based on this understanding, the Ohev Yisrael explains the statement in the Gemara (Berachos 34b): "מקום שבעלי תשובה עומדין צדיקים גמורים אינם עומדין"—in the place where ba’alei-teshuvah stand, even consummate tzaddikim do not stand. Here is a translation of his sacred insight: All of this is a tremendous act of kindness from the Almighty—that He performs a chesed for ba’alei-teshuvah, providing them with a source of life from the world above, where the external forces of evil have no power. For, until now, their source of life stemmed from the source of tumah, G-d help us . . . however, when this person decided to perform sincere teshuvah with self-sacrifice, his source of life was immediately detached from the klipos. For this purpose, Hashem, blessed is He, prepared higher worlds, namely these “tagin,” to draw life to them from there.