Appears the tile is on the stand (see second picture from link).

Wouldn't it need foam between the tank and the stand?

You'll see lots of tanks are construction that the tank is supported by the edges (sides), not the bottom.

When foam is used it's more to make up the stand not being truly flat, rather than for supporting the bottom plate.

(to above applies to glass, acrylic should be supported on bottom see here)

Interesting photos...but why are we looking at them? It is two different tanks. Both are OM4 way installations. Are these your tanks? Are you looking for advice?

Not my tanks but do find an neat way to visualize plumbing layouts and you have to admit the second photo is a work of art.