With Safari 14, Fav icon is now on by default, you would think this is great, except the Tab now shrinks to Icon size once you have a dozen or more. Instead of the old Fav Icon + Text Description in the Tab. i.e How Firefox behaves.
They also got rid of Top Site, and instead it is now an iOS Safari design like Start Page. You can tell by their much narrower design compared to your widescreen Mac.
One way to save memory if you have a few dozens or hundreds of Tabs, is to unload them by quitting Safari and Start again with previous session. This way all the Tabs are unloaded by default, they are there sitting idle. Basically just a list of Tabs. ( This also works on Chrome and Firefox )
But if you somehow finger swipe or accidentally press the Show Tab Overview, Safari will reload every single tab you have in the background just to create a Thumbnails for your Tab. If you have 1600 Tabs like some here, you will quickly run out of memory and start paging hundreds of GBs of data to your SSD. Basically shortening your SSD's life span.
And to those questioning why the large number of Tabs. I mean on one hand HN keeps pushing everything should be SaaS and Web Apps. Project Planning, Email, Social Media.. etc. On the other you have Research Notes, subject I need to research that instantly open a dozen tabs or Amazon / Online Shopping. Or simple daily RSS where I just Command Click all the news item I want to read. You also have sessions you want to read but you dont have the time right now.
All we really need is a Show All Tab Page as a list instead of Thumbnails once Tab number goes over certain number, with a Search Field at the top that hopefully search the Title and some Meta Data. I dont want to kill my 2015 MacBook Pro. It may be the last MacBook Pro with a decent keyboard judging by the way things are going.