Blender is trying its best to work with you; crashes are seen as rare bugs that Blender needs to work around. Arbitrary web pages can run arbitrary GL commands

Blender is trying its best to work with you; crashes are seen as rare bugs that Blender needs to work around. Arbitrary web pages can run arbitrary GL commands and if they can cause your GPU drivers to crash (e.g. lock your whole system) than any link you click has the potential of ruining your day. Unfortunately, nobody's yet figured out how to let a browser only run the pages that don't make it crash.