There not going to remove the faceplate for the same reason Superman’s S insignia is not getting ever taken away. It’s a comic book it’s full a bunch of impractical stuff. The faceplate is iconic, whether he has ability to morph his appearance a not at the end of the day that’s what it comes down to, brand recognition.
Honestly as far as I’m aware Superman’s suit wasn’t considered armor until the New52 and based on showings his flesh is obviously invulnerable and his suit not. What’s the practical reason for most heroes and villains to even constantly keep making suits? What’s the practical reason to have a logo. It’s merchandising and brand recognition.
Honestly comes off as trying to find a never ending complaint cause that’s obviously not going to be taken away in the long term.