why was Dr. Fauci pardoned? What did he do wrong?

[Eugene]

19. Empty Greene and other right wingers called for Fauci to be tried for vaguely specified "crimes against humanity."

Those "crimes" include damaging the economy by recommending lockdowns.
Marge also accuses home of causing literally millions of deaths (without evidence of course).
The far fringe also accuses him of covering for China among other claims
from the Q-adjacent fever swamp.

The pardon cuts both ways. It heads off a witch hunt, but it also gives
the crazies something to point out.

EDIT: (I almost forgot). The MAGA nuts have also tried to scapegoat Fauci for the "bungled"
COVID response continued by the Biden administration.