Pi-hole has helped improve my “relationship” with Firefox, or better phrased with Firefox forks like LibreWolf and Tor browser. Cool thing with Pi-hole is that you can watch the query log and see what happened in the background while you were surfing the Internet. I learned that :
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After removing the sponsored shortcuts in Firefox and putting your own shortcuts there Firefox will make connections each time you start the browser. So, if you would have icons on your quick start page in Firefox for let’s say EFF, Lemmy, Mastodon, HackerNews, with each Firefox start up, it would query these sites. which I didn’t like so much. Since then I’ve gone back to a complete blank start page, removing search and all those quick start icons, using just toolbar folders with bookmarks.
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Pi-hole blocks telemetry for Firefox and Thunderbird.
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Signal uses Google servers. I thought that they were Amazon servers, but looking at the history of Signal hosting I learned that they went back to Google.
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Firefox push notification services are hosted on Google servers. LibreWolf removes a lot of Google things that Firefox has by default, but not the push parts.
The amount of times I’ve seen people request help because Pi-hole was not blocking/functioning properly, well a hosts file just ensures nothing leaves that you want blocked. Besides, you may have different machines set up to be strict or permissive depending on their use case.
With Pihole you can restrict or be permissive with different devices, based on MAC or IP address.