Didn’t Fluttershy say she was sawing not knitting?
 
(Not sure if there is a major difference between the two.)

this kinds of things makes me dropped purchasing mlp comics what the hell am i spending my money for if it doesn’t even have value

Eh. I liked the episode and I still like that issue of the comics too.
 
People treat canon like it matters WAY more than it actually does.

Indeed, this retconning was the biggest disappointment of the episode for my S.O.