No but if there is no content moderation and Twitter becomes even more of an open cesspit than it already was, announcers are going to stay away because most of them do not want to be associated with toxicity. Perhaps politically active organizations will want to be there (e.g. the NRA or the ACLU), but nothing family-friendly (e.g. Disney) and most likely nothing Christmas-y during Christmas season.

They might if other channels aren't saturated and things are still in flux. Kanye was unbanned yesterday. Do you think he's going to behave better or worse than before? If he behaves worse then that's another headline, another news cycle about whether he should be banned or not.

Right now the trend is advertisers getting more spooked because of unpredictability and Musk being unable to reassure them in calls he has been reported to have been on. I expect this trend to continue

As I understand it, most of the ad slots were sold at a yearly sales event. This time most advertisers were cautious because the company couldn't respond to questions of how Elon Musk's takeover would affect the company (and specifically the type of content alongside which the ads would appear) as this was happening before he took over but after the sale was practically a done deal. This left them with only a fraction of the ad slots "pre-sold" compared to a normal year.

Additionally it seems a lot of advertisers have cautioned their ad departments to halt spending on Twitter ads for now because they're still unclear about wtf Elon Musk is up to (not to mention the mass impersonation fiasco that allegedly resulted in share prices of several companies being affected negatively).

It's not just sales people, Twitter seems to have gotten rid of most of its external communications people to the point where journalists can't even find anyone to ask for statements other than Elon Musk himself (which may be intentional given that he likes to present himself as the face of his companies).

But if Twitter's ad sales really did rely so much on these sales events, I'd wager that the sales people largely existed to communicate directly with long-standing big-spend advertising partners. It's hard to overstate how much these types of deals hinge on "social glue" rather than cold hard numbers (which can be interpreted/reframed to be interpreted however you want as long as both sides are happy).