"again, quoting south african figures, but no source. ignoring the different demographic."
Here's a country with similar demographics: the United Kingdom
Omicron arrived in the UK about 5 weeks ago, since which time the active Covid cases there have soared by around 80%, from about 1.0m, to 1.8m.
But no sign at all of omicron anywhere else, other than in the number of cases:
Not in the hospitalisations?
View attachment 3935165
[*] Coincides with omicron's arrival in the UK
Not in the number of deaths:
View attachment 3935162
[*] Coincides with omicron's arrival in the UK
To reference the thread header, viz., "it's mild, they said".... yep, sure looks that way.
That's according not to the anonymous Twitterati tweeting their unsubtantiated tweets, but to the gold standard source, namely the official data.
.