As someone with like 150+ tabs open in Firefox, I should probably be happy about this, but I'm not. Feels like they're encouraging my sick obsession with tabs when I should in fact be put on rehab.
As someone with currently 3500 tabs open and regularly hits 6000, I can only say: Amateur!
(Kidding. I just never close anything until I get annoyed because I like to use them as active working memory for a period of about a month or longer.)