Well the biggest selling point of VPNs is easier piracy not privacy. Most VPN customers just want to protect themselves from anyone watching their downloading habits. Yeah technically there would be a trail but no one is going to follow it to catch someone downloading inception.

They are probably referring to the amount of progressive web apps that are out now.

Modern day reliability and security best practices are based on planning for failures assuming they are all inevitable.

Back in the old days we would just assume everything is going to work out but that just isn’t sustainable now with how complex and expansive systems have become. Basically, there are too many moving parts to account for every single possibility so people should expect systems to fail and know how to react when it happens.