I'm a board member of a school district, and I have to say I was shocked at the resistance to trying new methods of learning from both the administration and educators in our districts. Flat out statements that "kids can't learn from computers," while not universal, were common. Resistance to change is enormous. Combine this with the education industrial complex that has built up around traditional schools, and getting anything done is very very hard.
So I would have a view that there was likely some bumpy implementation, that there were some grumpy parents, and the teachers were more than happy to have the rebellion established. Don't underestimate a passive-aggressive implementation approach as an attempt to scuttle the whole thing. (I had a teacher for my son when common core was established, who literally told all the parents "my job now is just to hand out worksheets every day." And that's what she did. Even though that was obviously not the intent of common core.)
So yes -- poor implementation in an environment that easily rolls small snowballs into avalanches that hit the NYT.