In its original form as in "transistors double every two years" it certainly already seems over. Apple silicon is at 5mn today, and Intel claims they'll conquer 3mn by 2030, so even these facts and theoretical statements already don't fit anymore.

We'll probably have a couple more innovations and might get to making a transistor out of a single atom (silicon atom is 0.262nm; carbon atom is 0.3).

5nm / (2*2*2*2) =~ 0.3

So I don't think we're done making faster hardware just yet, but we're certainly getting to the boundaries of what appears to be physically possible.