Pi-Hole and similar DNS adblockers just seem like a hassle. I can't tell my parents to buy a raspi, flash it, install and configure pi-hole, configure their routers or devices to point to the raspi, and do all of that from another city. Also personally, there's no time for that in my house.

Is there a program or systemd service I can run that pulls blocklists from somewhere (git, http, ...) and updates /etc/hosts? Before I go off and write a python script, systemd unit file, and shell script to install it on the linux systems of friends of family, does this exist?

Resolution comment: Tblock