I am not claiming that Einstein will be forgotten, only challenging the conjecture that he will be a figure well known and cited by the general public. I really doubt that most people on the street would remember even having heard of Newton, much less referring to him in any context.

Don’t worry, the same will be true of kardashians, probably sooner than It happens to Einstein.

I challenge the assumption that the average person associates nuclear energy with Einstein (or the other way around).

and I challenge the assumption that even physicists know much about gravity beyond "keeps stuff on the ground." We may have general relativity, but it somehow seems to miss something to say physical models of gravity are that well flushed. It doesn't explain something like 80-90% of the gross movements of large masses seen in the universe by astrophysicists. We know a heck of a lot more about the small scale.

But this is a silly point I'm making, I admit ;)