South Korea is in their 4th year of something which is killing 65+ yr-olds faster. But I am 100% sure it's not Covid, because it can't be Covid, therefore it is not Covid.
Except that it is Covid after Feb 2020, but before that it is the well-known-but-mysterious 65sulp virus.
The Ethical Skeptic has much more on this hypothesis here: China’s CCP Concealed SARS-CoV-2 Presence in China as Far Back as March 2018. A deeply sinister interpretation of this is China deliberately released covid or something similar in 2017 to inoculate its population for their planned 2019 release of covid19. A less sinister but also nasty interpretation is covid or something similar escaped from the Wuhan lab in 2017 and China allowed it to adventitiously inoculate its population, a circumstance they used in 2019 with full release of the bioweapon. Another possibility is they simply concealed the (accidental or deliberate) release of covid in 2017 and then did psyop theater on the world in 2020 causing everyone else to panic. A very important unanswered question is why has the West reacted to covid in such a stupid and self-destructive manner? Have we become weak, a hill of mediocrities that has grown rotten over many decades? Or is the West itself deeply sinister and is using covid to subdue the world by first enervating Western societies?