The DQRM Show, lacking higher profile targets, has now settled upon YJ0A, lowly Vanuatu (#101) now on 15 m CW.
Argh..those know code Extras are at it again.
It could be "know code Extra's" but it could also be "question-pool-memorizers that wished they could work DX"
I have no proof either way.
Reading is fundamental. Since the post said the Op being interfered with was using CW it would indicate that they were or at least should have been in the CW portion of the band. (Yes I know band plans aren't technically official).
So why would someone who memorized the question pool and doesn't know Morse Code or care to know, be in that part of the band in the first place.
More than likely an old time Extra that still hasn't learned no matter how big his station is, without propagation in his favor he won't get heard. So he gets mad and jams all the other stations he feels are talking over him.
But hey, it's just a speculation and it conceivably could be for any reason.