I currently have 8260 tabs open across 9 windows, and that's just on my main laptop, across all devices I probably have over 20k tabs, and I don't really have any issues regarding tab management.
I used to have issues with Firefox randomly nuking my state on load and having to restore backups, but now I use Tab Session Manager for that and never think twice about it.
I used to have issues with Firefox randomly nuking my state on load and having to restore backups, but now I use Tab Session Manager for that and never think twice about it.