Alice ,no,it is not a simple as that.
opera singers use excess vibrato,which [imo]is not stylistically appropriate for folk music.
many folk singers have good technique,but they sometimes use two different voices the head voice and the chest voice.
[imo] good singing technique requires singing from the diaphragm,something that I do,but something that opera singers also do.
however I still sound like a folk singer,and Opera singers dont they sound like opera singers.