Regardless of whether this was a lab escape or not, there's a 100% chance of a pandemic virus happening again.
So if this COVID-19 origin hypothesis is true and it took only 8 to 19 years for a lab leak of a gain of function experiment to cause the worst pandemic in a century, we ought to be very interested in making sure this happens a lot less often. Ideally not at all, but I see no way to impose a world wide ban on this type of research.
That this should be done under the strictest protocols is obvious (and internationally-monitored, no less).
But pretending that dice aren't continually rolling in nature and hoping for the best seems shortsighted.
That doesn't mean we'll be able to provide safe vaccines for sufficiently novel pathogens, behind Moderna's candidate was a decade and a half of research into making safe vaccines for SARS type coronaviruses, with researchers at the NIH finding one solution in 2017 for the antibody-dependent enhancement issue that had been plaguing such attempts starting with SARS and inactivated whole virus vaccines.
A fast pandemic can also get a long distance before you can ramp up production and vaccinate 8 billion people, with vaccines that so far need freezing for shipping, and medical grade refrigeration afterwords until used. Plus you need to make at least 8 billion syringes and needles and so on.
I would point out that the some primary points against GOF utility in the 2014 survey report weigh very differently now: (1) lack of viral genetic surveillance at national levels, (2) inability to quickly generate novel vaccines, (3) inability to distribute vaccines worldwide.
Whatever chilling effect it had, tall order at this stage of this general program of research or not, it's high time its advocates including yourself point to tangible progress of one sort or another, for we now can reasonably assess the risk side of the risk benefit trade off.
See this comment https://news.ycombinator.com/item?id=27398081 on why the advancements in vaccines don't even begin to cover the risks, or note as of now how long it looks it'll be before the Third World gets vaccinated against as much as is humanly possible, no sooner than sometime in 2022. Consider the possibility of a sufficiently good escape variant requiring another dose or two.
Consider how little the the whole world can afford the expense of a pandemic, and the Third World in particular, including viral surveillance of any sort, "molecular" (PRC based) tests or sequencing samples. And this time they're lucky, COVID-19 mortality risks are highly weighted with age, something that hits the young harder will hit them a lot harder.
Consider how many possible, probable, or proven lab escapes will it take before the world's governments clamp down on a lot more than gain of function research.
Yes, nature wants to kill us, although your itemized points also address that issue. It's just not very good at it, and almost all of that was before the germ theory of disease was accepted in the end of the 19th Century.