Earlier quoted context omitted.
I wonder how much a gateway router can do here. Most of the data passing it are encrypted: https, SSH. Cutting off the phone-home requests is best done on respective devices: you can run firewalls on most desktops and laptops, and even phones. Рhones often go online via GSM or LTE, without passing through the home router. While a proxy like pihole can be helpful sometimes, cutting off tracking and ads is done best by…
"I wonder how much a gateway router can do here." "... cutting off tracking and ads is best done by browser extensions ..." What if the browser vendor, who is also a data collector, requires user to log in or otherwise identify herself before she can use extensions. A home "gateway" is a computer running a kernel with IP forwarding enabled that is being used as the point of egress from the home network to the interne…
An on-device firewall can firewall individual processes and applications. An upstream / gateway firewall does not have such fine-grained control. That was my point.
Running stuff on my router is entirely possible, but I limit it to routing and running a wireguard endpoint. I prefer to run my private stuff in the confines of the home LAN.