For the average person this rate does not matter. They don't need access to the cutting edge of quantum physics, astronomy, dance, art or javascript.

All you have to do is look at the speed at which new info is being added to Wikipedia and Stackoverflow which is stabilizing, i.e. it is not growing as it once was. Basic/foundational knowledge is more or less all covered. https://en.wikipedia.org/wiki/Wikipedia:Modelling_Wikipedia%...

And that sum total comes to 50-60 GB compressed. Think about that number. It's not big.