I believe this is not a matter of argumentation or rhetorical comparisons but of simple facts:
Rockwool slabs and bricks ARE successfully used several times by many professional growers. Simply let them dry out and sterilize them as they are with hydrogen peroxide and dry again - then reuse.
As for Perlite you also dry out the whole clod with everything. The roots will shrink when drying. When completely dry, shake well and there you have it separated much easier. Do not separate all micro particles of organic matter and fibers from Perlite but only sieve the dusty and fine parts out - then sterilize it all with hydrogen peroxide and reuse (preferably for seedlings or fast growing crops, may indeed be a hint here).To whom ever this still seems troublesome, simply use Perlite in your potting substrate or in drip to waste. It's anyways a good idea to have some robust and forgiving plants growing in "drip to waste" to be fed with used
nutrients, instead of depleting them.
And here you have got an ecological, fully functional, practicable and plausible way to go.