It was not obvious from Elon tweet that the lack of sales already happened back in May. And apparently many other people thought he is raging over events of last week only. Twitter issues are larger then that and started sooner. Firing of account managers or blocking ad buyers on Twitter were just last step in issues.

The special industry event where many companies sell and buy ads a year in advance at discount is the context I did not had and many people did not had.

It clarifies that advertisers aren't being persuaded by crazy activists like Elon is claiming..

The $600 million figure is specific and new to me.

This puts Twitters losses over the next year at nearly $2,100 million by my count. It's no wonder that Elon feels the need to fire everybody.