Just because your OS / browser vendor "trusts" a cert doesn't mean you should.
In other words, users should always have the right to control who they (indirectly) trust. That's what the comment above is referring to - it will be even worse if Superfish is used as an excuse to take away this right.
In other words, users should always have the right to control who they (indirectly) trust. That's what the comment above is referring to - it will be even worse if Superfish is used as an excuse to take away this right.