My workflow works great for me, I have no trouble finding tabs. I have multiple windows, tab groups, and extensions like TabSorter, The Great Suspender, Alfred Tab Search, and others to manage my tabs as a queue of things I want to read / get back to. I use Pocket as well, but that's for my queue of things I've already read that I want to archive, not things I want to read in the future.
I process a high volume of tabs but I keep it super organized, just like my filesystem and email.
Because of the way browsers work, it's a bad idea to keep that many tabs open. Most browsers consider each tab as its own process, and each tab consumes lots of memory... they really don't optimise for 100s of tabs open at a time.
I understand you got used to that, but really, there's no reason to keep that many tabs open.
That's only true if you don't suspend your tabs. I suspend 90% of the background tabs so they use almost no CPU and MEM while suspended. It works great on my i9 machine, I have plenty of processing power to spare, and I love being able to visually see the state of my reading queue without manually managing bookmarks.
I think I never have more than 10 tabs open, so this is really surprising to me.