But the experience is not smooth as it can get if you're running a bit older HW. Gmail and Slack are notorious for bad performance even when the content display

But the experience is not smooth as it can get if you're running a bit older HW. Gmail and Slack are notorious for bad performance even when the content displayed is rather simple plain text. As a user I don't really get anything in return when developers decide to use complex JS solutions for simple use cases.