Agree, but beyond attack surface I just don't want to become accustomed to something that can be shut down, aqui-hire/closed down, or otherwise disappeared via

Agree, but beyond attack surface I just don't want to become accustomed to something that can be shut down, aqui-hire/closed down, or otherwise disappeared via the ongoing advance of technology. This feature looks nice and I hope other browsers adopt and adapt and make more meaningful end-user advancements like this that are visible to the eye.