Extending and consolidating hosts files from several well-curated sources like adaway.org, mvps.org, malwaredomainlist.com, someonewhocares.org, and potentially others. You can optionally invoke extensions to block additional sites by category.
This Bash script just removes a pre-installed Telemetry, a pre-installed software and libs with some potentional or high risk. Script removes them to make your experience better and more secure. Also, the script installs an additional software for the protection. You will find more advices in Readme file about "what you can do more".