The people who continually criticize Mirai swing back and forth. When she skates clean, they say she needs to raise her PCS. When she makes mistakes they say she doesn't deliver her tech.
That isn't just true of the people who criticize Mirai. People do the same sort of criticizing with all the skaters. Figure skating is a sport that requires both technical skills and presentation skills. So unless they can put both sides together in one skate, there's going to be criticism.
What distinguishes skaters above and beyond TEC plus PCS is whether or not she or he can make the audience feel something.