Quote from idSurge »Plenty of tweets dunking on Wizards logic with SFM, but I still see people saying its too good. I dont get it, at all.
Similar to Jace, a bit of apprehension from a past Standard. A lot of players started around Zendikar and the whole Cawblade saga left a sour taste in their mouths. People are more likely to remember a negative experience and act accordingly.
Another is simply aggro players hiding behind the poor disguise of "Stoneforge Mystics limits future design." Turn 3 a Batterskull and you could almost hear the 90's dial-up sound in their head.