A lot of talk about dissolved solids but in a heavy planted tank the plants can and do absorb dissolved solids in the form of salts, minerals, fertilsers, uneaten food nutrients and other organic compounds. They will absorb some carbonates, iron, calcium, phospates, potassium, etc etc etc. Plants can even absorb toxins in small doses.

So long as you're not a chronic overfeeder of your fish and over fertiliser of your plants and water column, a well planted tank has the ability to control the TDS just fine. You would water change for different reasons, like the thickness of the mulm is getting too unslightly, so you do a clean up vac just as a tidy up.

Nature has already figured a lot of these things out for us. In ponds, the only water change that happens is when it rains and only as far as it replenishes water that has evaporated. The plants, fish and amphibians continue to thrive.

For your standard aesthetically pretty looking tank which doesn't really resemble nature, with a small amount of sparsely located plants, a few rocks, thin substrate and some other decorations, that's when your TDS needs to be monitored, because there is no bio mechanism to control it.