Remember that a lot of these accounts are told with rose tinted glasses. The world would not have been that different whoever won.

The same type of abstractions would have been build on top of whatever was left standing and we would have more or less the same things we have now. These accounts are not epic battles, they are just businesses competing with each other. An OS is just software that manages hardware, a lot of the innovations are academic, if it runs the hardware properly, it works.

That said, as long as it's not taking up time you should be utilising for other things, I don't see a reason to stop. As you've been doing it for a couple of years you're going to run out of material and you will have it all memorised soon anyway