We watched Moore's law hold fast for 50 years before it started to hit a logarithmic ceiling. Assuming a long-term outcome in either direction based purely on historical trends is nothing more than a shot in the dark.
Then our understanding of the sun is just as much a shot in the dark (for it too will fizzle out and die some day). Moore’s law was accurate for 50 years. The fact that it’s tapered off doesn't invalidate the observations in their time, it just means things have changed and the curve is different that originally imagined.