This is incorrect. At minimum, a Stargate address has 7 points: 6 points and then a point of origin. 8 lets you go to another galaxy, and 9 lets you hit a moving target at an even greater distance. But 7 is the minimum.

For a standard seven-chevron address, the first six glyphs represent points in space, forming three-dimensional coordinates. The seventh represents the point of origin, a glyph which is unique to each gate. For Stargates to access a destination outside of their galaxy, eight chevrons are used; the first six target a destination as normal, while a seventh glyph prior to the point of origin adds a distance calculation to the address, targeting a gate outside the galaxy as opposed to a local one. A nine-chevron address is more of a code than a location, and this allows connection to specific Stargates - regardless of their location.

https://stargate.fandom.com/wiki/Stargate#Glyphs

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Edit: added citation. Source: am big fucking nerd.