After some research and talking to a couple manufacturers I thought I'd post an update incase anyone was curious down the line.
The trim around the bottom of tanks don't provide any structural support and are mostly for aesthetics. They do function to lift the tank up causing it to be supported at the edges only, even when on a flat surface, which is why a stand with no centre support is the same. The reason why some trimless tanks cannot do this is because the glass at the base is too thin which requires the whole bottom pane to be supported.
In summary, trimmed tanks can be supported only at the edges. Trimless ones - it depends on the thickness of the glass.