In re
> Regarding "limit numbers and prevent overcrowding, particularly in the peak summer period".
The additional problem in summer is that most visitors are day trippers heading up the Midi, arriving, leaving by coach.
And, just to boost numbers in what used to be the quiet periods:
https://www.chamonix.net/english/news/utmb-2020-big-names-already-announced
https://www.chamonet.com/events/chamonix-unlimited-festival-chamonix-main-t...
But as usual regarding any words uttered by politicians, its a white wash, as making money & increasing visitor numbers is the overriding concern of the local politicians regardless of what you read in the press. You only have to witness the vast increase in hotel beds over the last few years in the Chamonix valley to witness where their priority's lie.
Unfortunately the valley & the surrounding mountains are being ruined by the very popularity that naturally occurs for such a beautiful unique area, but its also not helped by not encouraging sustainable, less environmentally impacting tourism.
Hopefully we may see a change, but its doubtful.