No, it is not disrespectful. Face-to-Face confession is a legitimate option recognized by the Church.
Complementary Norm: The National Conference of Catholic Bishops, in accord with the prescriptions of canon 964, §2, hereby decrees the following norms governing the place for sacramental confessions:
Provision must be made in each church or oratory for a sufficient number of places for sacramental confessions which are clearly visible, truly accessible, and which provide a fixed grille between the penitent and the confessor. Provision should also be made for penitents who wish to confess face-to-face...