[ramblerman]

> You argument effectively reduces to: never innovate.

You chose to reduce it to that. There is no need to reduce every argument to its black and white extreme, although that is the easiest interpretation.

Bitcoin in particular requires truly ridiculous amounts of compute and has made hacking a far more profitable enterprise than before.

There are already digital currencies tackling the first problem, the 2nd could potentially also be solved.

So a more charitable interpretation might be, more innovation is needed to get digital currencies right.