I don't know if its seasonal or not yet although I could see experts could start making predictions already. To me though it is not one big wave. Watching the numbers in the USA and other countries it appears that as restrictions are lifted cases rise. When they rise we add restrictions and they go down at a much slower rate. Its many smaller waves.
"many smaller waves" does not seem relevant to understanding the virus and in fact is what they are warning against. Where I live, if you dig down, "waves" appear to be simple thing, super spreader events at essential businesses and churches.
> WHO officials have been at pains to avoid describing a resurgence of COVID-19 cases like those in Hong Kong as “waves” as this suggests the virus is behaving in ways beyond human control, when in fact concerted action can slow its spread.
And based upon your assessment, you'd seem to agree with her point - "It’s going to be one big wave. It’s going to go up and down a bit. The best thing is to flatten it and turn it into just something lapping at your feet"
I can't figure out who the target audience is for - the people who have written off COVID also seem to have written off the WHO, and those who haven't see that there's still a major ongoing problem.