Although your comment is acid, I think this bears truth
> Maybe Leo should focus on finding a way to disconnect western society from their current cult-of-progress delusions?
It's too weak of a rhetoric from the highest representative of the Catholic church to call for regulations, but the alternative is to call for a transition from capitalism itself. Nothing that grows inside economic doctrines that only value constant growth at all costs can be safely regulated, regulation being only a makeshift solution.
Are you serious? Have you seen how much environmental damage the old Soviet Union has done? Do you think it's that simple: "capitalism bad"...?
Proper systemic improvements are possible, and having markets is a good way to allocate resources and efforts.
Capitalism is clearning having a moment atm but as far as I know nothing about capitalism demands permanent growth. Capitalism is about private ownership of the means of production (and a complicated system of laws that allow ownership of abstract concepts, like futures contracts). Its the people who always want more - usually the ones who already have the most, and this has been the case since the first kings.