My $0.02, ignore as you see fit.
As a consumer, I prefer (arguably have the right) to know at the earliest
possible opportunity whether a product I am using is flawed. Whether a
medication appears to cause cancer, my car is prone to exploding when rear
ended, or a piece of software is found to be exploitable. I don't wish to
wait through some potentially lengthy process, legal or otherwise, in
the producer of the product denies or downplays the severity of the flaw
before finally addressing the problem and making the flaw public before I
hear about it for the first time. To pretend that you are somehow immune
the problem while the vendor fails to disclose it is simply ridiculous.
While vendor coordination is certainly nice to have, the ONLY thing I
like to see required in pre-patch disclosures are constructive ways to
mitigate the problem, and the impact of those mitigations.
For those that would not disclose, what gives you the right to judge
someone is capable of dealing or not dealing with the newly announced
vulnerability, and what makes you think that you are qualified to manage
risk on my networks? If you are an information security professional,
you are paid to deal with "problem", if you are not capable of dealing
it, then you need to rethink your profession.