You could close tabs when you are done with them. You don't need to read 150 odd at the same time!
I'm never done. Many stay open for months before I'm done, or compromise, or give up. In terms of a Ship of Theseus, you might call this the same set of windows I had at some point in 2013 (App Data copied over during computer replacement).

I wonder how you manage 150 tabs, I would imagine you either have problems clicking them at the top (if they're all there at once) and remembering what is open in which one anyway or you'd have multiple lines cluttering most of your screen, or have to scroll left and right through the list.
On a 24" monitor, the tabs in a single window aren't uncomfortably crowded unless there are, say, more than 115. I use multiple windows at a time - minimally a second window for prurient content...

Generally, I have a good idea of what stretches of tabs are what sort of content, when I opened them, and what I need to do with them. For example, I keep my email pages, forum pages, and any other important services involving user accounts, adjacent to each other near the left edge of all the tabs.

Whatever it is, it sounds like just using well-sorted bookmarks or quick-select options would be faster.
It's not - I have the experience.