Ok, the LinkedIn page does not even list who are behind this "organization".

This looks like a scam, anyone know more?

Apart from Waterfox, the browsers they recommend are proprietary, looking up the owners of the website show a lobbying firm that has Google as their client.

Members include... Chrome.

Literally the first thing anyone with knowledge above grandma* does is install Chrome (or for a few of us Firefox).

* sorry grandma!