Veritasium released a great video on PFAS and forever chemicals.( https://youtu.be/SC2eSujzrUYI ) I highly recommend everyone give it watch to have some context on why the Mango idiots plan is terrible.

https://www.valvesoftware.com/en/contact?contact-person=Gabe+Newell

As long as you’re respectful in you’re message I doubt something worse will happen lol.

You could also try customer service but I’m not sure they have jurisdiction over matters like this.

Gaben will sometimes respond to emails. I’d say try it. You lose nothing by trying