I believe they did it for a number of reasons, 1) to prove to the
crypto world that they are a force to reckon with. 2)
Misinformation about crypto may have also played a role in their
decisions. Fortunately, they must have realised a huge loss of
revenue from the banned crypto ads and that brought them to their
senses. Either way, they have permitted crypto ads back on their
platform, so it is all good.