some functionality of Tridactyl are disallowed becsuse of the plugin system Web Extension that Firefox uses. https://github.com/tridactyl/tridactyl#webextension-related-issues Qutebrowser on the other hand is built from the base up to be used like that.
If you have a specific problem you might find some answers in the issues on their GitHub (Tridactyl’s) or open a new issue…
Tracking stuff came as soon as you could communicate asynchronously with a server, really. It became widely known and a plague in the 10s but it started as soon as Ajax was available. Keep in mind that Google and most of the websites were free and ads driven almost from the start because that was the only way to create a critical mass of users.