All choices will require some involvement from the hobbyist, you have yto decide what & how much you want to do.
I used MTS & Sand Cap. It's more work up front to set up vs. opening a bag of ADA. But, I'll get bored and move a tank in 2 or 3 years before the soil is ever depleted. There are forum members with dirt tanks that are 6-10y.o.
I understand ADA substrate needs a lot of flushing over the 1st month? There's a YouTube video I saw about setting up an ADA tank. At a year or so I read here many people are starting to add Root Cap ferts to their "tech" substrates. Other members will experience with those substrates will comment from their experience.
If done correctly that should not be the case with a dirt tank. While we all tend to think "our" choice is the best, you are correct there really are not. It's more a matter of what's best for you.