Cherry-picking the fuel for jets example makes sense, since somehow we don´t expect aviation to transition completely to airscrews. As for the disposal of HEPA

Cherry-picking the fuel for jets example makes sense, since somehow we don´t expect aviation to transition completely to airscrews. As for the disposal of HEPA filteres loaded with air-stable inorganics, that still is pollution, only the kind of waste you store safely, and if not give people cancer, but highly localized so.