Seems behind on that.
Folks here and elsewhere have long forgotten planted tanks and went straight to reefs. Many reef shops here, very few plant shops.
ADA does seem to use marine plants, so they are scum anyway until they do
Nor do they allow marine plants in their scaping contest, much like most FW centric contest.
If it's a "plant" contest, then plants, or large macrophytic algae should be included.
Just because you lack the knowledge and skill to grow Cymopolia and someone else can grow it wonderfully, is no excuse.
An Expert FW plant person might be able to grow Tonia well, but a newbie might not. Just because you have not kept or seen something done before, does not mean it should be excluded or conformed to your set of norms.
It's still an aquarium, and it's still a large leafy green/red thing.
Trying to represent the reef to a terrestrial scene is a bit at odds.
Most want to represent a reef, not a terrestrrial system or garden.
So that is their inspiration, diving really hits that home.
There are few terrestrial counter parts.
Try to fine one like this:
However, it can be done and can be done well, as well as using primarily green marine plants or macrophytes.
Here's what I did with 43 species of marine plants:
I'd challenge someone to recreate this:
BTW, I showed this to Amano and his cohort.
They where very surprised to learn that this was nothing but algae and plants, not one coral here: