One advantage, at least IMO (and isn't this a thread about opinion?), to the morph situation is that if extreme morphs feed the pet demand and trade, then I can see an argument for that protecting wild populations. If there is a hypothetical great demand for neon blue whateverthehells, and that morph is the result of years of focused and intelligent line breeding programs, resulting in a healthy and attractive breeding pool so that there is not significant risk of inbreeding, then I can't help but believe that the situation will help protect the wild populations of whateverthehells from over-collection.
I spent more decades than I like to admit as a major fish breeder, focusing specifically on ornamental species like betta splendens, angelfish, and fancy goldfish because of my great interest in genetics and line breeding.
This topic of ethics in breeding has been hammered flat on so many occasions that I feel very familiar with the ethical issues and realities of it. There will always be those on both sides, but in the end you will never control or even influence those who are just out to make a buck.
I mean, in ANY pet hobby, how often do you see "Flash in the pan" people who learn about something new, get that greedy gleam in their eye and think that they are going to get rich in a hurry without any thought or care about the ethical issues involved, and then they find out the hard way how hard/expensive/labor intensive the endeavor is? They are usually here and gone before you know it, right? Most of those with longevity in any hobby have to learn to balance the hobby and their other priorities like family time, money, etc... and unless they run a business with their hobby (which is far too much like work to me! People would exhaust me!) any sales they make are just to help defray a small portion of their costs and make room.
There is an old joke in the Discus community: "Do you want to know how to make a million dollars selling discus? Start with two million!
Sorry for the tangential turn, but I don't think you can divorce the ethical issue from the commercial here, as so many are motivated by earning potential.
For me, personally, it's all about breeding towards specific goals, and I don't give a wet slap about money, but I can't speak for anyone else, and I have seen a LOT of the other end of the spectrum over the years.