That's not true. Studies are showing large fractions, say 10-25% of COVID patients are suffering symptoms after a month.
COVID infections have demonstrably damaged pretty much every organ in the body.
That's very different from the initial assumption, whence all policy, that COVID is like the flu, and passes in two weeks if it doesn't kill you.
> Even after being vaccinated.
However, these vaccines are stupidly effective. Once enough people are vaccinated, COVID will die out in the community, just like measles. You're right that we can't fear COVID forever.