The fact of the matter is, that there are G chords all over the neck, way more than most people will ever learn. There are also many ways to finger those G chords. They are all G chords. They all can be used to embroider the music by adding suspence or depression, or joy.....etc.

As you grow in your musicianship, you will play any given chord in the best position for the specific demande of music your are playing. There are also many ways to finger any of those chords and they are all right, if they work for the piece you are practicing. If you continue to grow as a guitarist, these diffrent approaches to a given chord or its fingerings will help you to increase speed and have better support for the melody becuse the chords a played as high or as low as the song demands.

You may need to play the same chord at diffrent octaves, or jump to other difficult chords, and fit in lead lines in inbetween the beats..... The ablity to play the same chords in diffrent places and with different fingerings is a very useful tool for acheiving musical virtuosity.

I would say play your G the way you want, as long as it is a G chord and not some dissonant outlier. Then go on to learn other G positions and be able to change them up as needed. The only real rules are that YOU, YOUR FELLOW MUSICIANS, AND YOUR AUDIENCE ENJOY THE MUSIC!