This usage of "learnings", while certainly more common in "business jargon" today, was used by Shakespeare:
https://www.opensourceshakespeare.org/views/plays/play_view....
https://www.opensourceshakespeare.org/views/plays/play_view....
From a correctness stand-point, I think a descriptionist would be satisfied with an attested usage, especially from such a source. From a style point of view, I still find myself feeling embarrassed for the author when I encounter this usage (which is my own problem).