That, whole no water change concept is imho something for tanks with no lifestock.. Me too i did it for a i do not even remember for how long, only topping off the water level without water changes. And this was all about 30 years ago. At that time it was very common and freqeunt water changes wasn't realy recomended in any book available for what i remember. Actualy back then, all information was rather very one-sided and short compaired to what available nowadays..
In the end the chances that no water changes doesn't work is higher than the other way around, because there are some may things that can have impact on a small confined ecosystem as an aquarium. And the majority aint even visible with the naked eye and the longer you are into the process the narrower the turning point can get. The moment it becomes visible, 9 out of 10 times you are to late and there already will be damage done.
Preventing is beter than curing..
In theory it might well be possible but in practice it stays a gamble even if you are very experienced.. And we should not experiment nor gamble with the health of our precious fish etc. ANd we certainly should not see our hobby as a sport to proof theories.
With all respect to Diana Walstad here books are realy very interesting.. But what's in the end the point of not having the need of doing water changes?
Is it to benefit your expenses and make it cheaper? Or because the water from the tap actualy aint aquarium suitable and need a lot of work to condition it, which makes it such a hassle? (Rather lazy than tired?)
If one of the points above is the argument.. You actualy should not have an aquarium at all and look for another hobby..
Something like a poodle maybe, also a pet you can scape with..