Earlier quoted context omitted.
I think the parent was referring to this rather massive and long outage very recently: https://www.cnn.com/2023/07/01/tech/twitter-rate-limit-excee... rather than cloud providers it would probably be more useful to compare to eg Instagram or TikTok
I wouldn't style that an outage. I'm not sure what regular users that affected, but it could not have been very many.
And high-volume users are who create content for the site.