Actually... There is speculation whether the excessive numbers of satellites (e.g. the Starlink satellites) going into orbit currently will disturb the ozone layer upon re-entry in a couple of years.
I think we're beyond speculation. It seems pretty solid to me that burning metals on re-entry will release harmful chemicals. Why it hadn't been proposed before, I suppose just because it wasn't happening on such a gargantuan scale. Fuck Lonnie.