It seems reasonable if you're thinking about the amount of material that must be sourced, transported, processed, etc. also serves as a check that the newly produced planes weren't simply 70x smaller than before.
The key and important factor of computer hardware has little to do with weight.
Whereas, weight is an important factor for aircrafts. A plane produced today will have similar capabilities as a plane produced 30 years ago of the same weight.
That is absolutely not the case for computer hardware.
Ben Rich talks about how much flight computers cost per pound in his memoirs.
Can’t find the quote though as I’m out and iBooks says all my books are broken.