Something along this subject, and was mentioned much earlier. (I was told earlier, and I do listin to Rabbis who do mention many things, many times intertwined within the lessons (bringing together the different levels and learning from Torah) but this is something I just came across.
"The ban against studying Kabbalah was lifted by the efforts of the sixteenth century Kabbalist Rabbi Avraham Azulai (1570-1643).
I have found it written that all that has been decreed Above forbidding open involvement in the Wisdom of Truth [Kabbalah] was [only meant for] the limited time period until the year 5,250 (1490 C.E). From then on after is called the "Last Generation", and what was forbidden is [now] allowed. And permission is granted to occupy ourselves in the [study of] Zohar. And from the year 5,300 (1540 C.E.) it is most desirable that the masses both those great and small [in Torah], should occupy themselves [in the study of Kabbalah], as it says in the Raya M'hemna [a section of the Zohar]. And because in this merit King Mashiach will come in the future – and not in any other merit – it is not proper to be discouraged [from the study of Kabbalah]. (Rabbi Avraham Azulai)"