It is what it is.
At 1 Thessalonians 4:16 the voice of the resurrected Lord Jesus Christ is described as being that of an archangel, suggesting that he is, in fact, himself the archangel. This text depicts him as descending from heaven with “a commanding call.” It is only logical, therefore, that the voice expressing this commanding call be described by a word that would not diminish or detract from the great authority that Christ Jesus now has as King of kings and Lord of lords. (Mt 28:18; Re 17:14) If the designation “archangel” applied, not to Jesus Christ, but to other angels, then the reference to “an archangel’s voice” would not be appropriate. In that case it would be describing a voice of lesser authority than that of the Son of God. —Insight on the Scriptures, Watchtower Bible and Tract Society.