With my 50/1.2 that I only shoot at f1.2 (why else buy it?(well, besides the many other reasons to buy it)) any adjustment I dial in is lost due to subject or camera movement. So why bother setting an AF adjustment? If I shot everything on a tripod with a static subject, then yes, it needs an adjustment dialed in, but in that case I would be manual focusing anyways, so the adjustment is moot.
This is what I've come to realize lately. ymmv