It is a valid trade-off to leave Javascript enabled by default in Tor Browser. The reason being, the experience is much more user-friendly to a layperson and th

It is a valid trade-off to leave Javascript enabled by default in Tor Browser. The reason being, the experience is much more user-friendly to a layperson and thus results in greater network usage and diversity. "Safe" is a relative concept in information security and not everyone has the same goals or risks - though in principle I agree disabling JS greatly hardens a browser.