Just checked and I've got 24 tabs open right now. Basically in my case I have a list of things I'd want to do at any given moment (chat on Whatsapp, watch anime, learn Chinese, etc), so each one gets its own tab group with things I'd usually want for the thing in question easily accessible. For example in my anime tab group I have My Anime List, two tabs with different anime and Reddit discussion threads. Also in my defense I'm looking for an oven right now so that's inflating my tab numbers a little.