Computers were in use for at least a decade before the first home computer was a thing and then they became accessible to the public. That's just history. First cell phones were also prohibitively expensive and it took a while before we got to the point that everyone got one.

Social media would have been a better example to go with since that has ruined a good number of lives and allowed for genocides due to the speed at which it was deployed to people before they (or the companies) knew how to use it properly. Also, many problems were created by the companies rolling social media out (algorithms pushing towards engagement that leads to huge body issues and increases in heath problems, genocide in Myanmar allowed to be organized on the platform and assisted due to algorithms pushing conflict posts for engagement again) so that's not a user issue, that's very much a professional using a tool for malicious purposes due to profit.

To your point that it comes down to the individual and not the tool, well how does anyone know who is a responsible user on the internet in early interactions? That might be why a lot of people are defaulting to all users are irresponsible due to lack of proof.