Comment by fdomingues

To overcome the hoarding I use Simple Tab Groups[1], that has auto backup, combined with Auto Tab Discard[2], to completely inactivate open, but unused, tabs.

[1] https://addons.mozilla.org/en-US/firefox/addon/simple-tab-gr...

[2] https://addons.mozilla.org/en-US/firefox/addon/auto-tab-disc...