I mean yeah, if you want to understand the devolopment of physics you are required to understand the foundations it was built on, this is basic study.
Its like telling someone they should read the bible if they want to be christian, or telling someone they should read the instruction manual if they want to actually know what the terms they are using mean.
Yeah, you should read Marx if you want to understand the historical development of socialist ideas, but if that’s where your reading ends, then your ideas are stuck in the past.
Socialism isn’ta religious dogma that is inflexible and unchanging. It’s an intellectual idea that grows and becomes more refined over time.