Think you need to calm down.
You have come here as a new member, and pretty much insulted anyone who doesn't keep fish the way you prefer.
You are giving it all the yada yada like some kind of know it all, but in reality you DO NOT.
Sure I agree there are many here who have no idea on how to keep any fish, let alone fish such as Arowana, Polypterus etc.
But there are more here who have a very good understanding of the fish.
There are some of us that do more then just keep these fish.
Some of us (myself included) are in direct contact with researchers and scientists (to drop a few names, Prof. dr. Jos Snoeks. Dr. Igarashi and so on) from institutions like the Laboratory of Animal Diversity and Systematics at Leuven University, and the museum of Central Africa.
Helping identify new species and sub-species and reporting back on behavior of said fish in a captive environment, as studies in their natural environment are almost impossible due to dangers posed from regimes in said territories.
Having one of the few known PBB "Turkana" in captivity, I helped report back on PO. Bichir Bichir caught from the northern shallows of Lake Turkana. Helping distinguish differences between them and from locales such as Lake Omo and Lake Chad. Helping to discover the movement patterns of PBB from one area to breed in slightly more Alkaline waters with hints of brackish.
I would say that gives me a right to acknowledge myself as having a good understanding of Polypteridae, and am more than competent at keeping them.
Yet, as I said, none of my tanks (other than for smaller upper jaw species) are planted. (Though all are with substrate/rocks/driftwood)
So according to your expert opinion, I am a useless fish keeper then?
Just to add here, there is a lack of pictures of Polypterus in their natural habitat. Mostly due to the dangers faced getting to the areas.
But here are a few nice snaps of a PO. Congicus in the wild. (Note the lack of heavy plantation...)
Maybe if you didn't come in here from out of the blue guns blazing, you would get a better reception!