i think u r confusing 2 different things
tyranny in islam which is not enforcing shariah
and use of force in certain matters to enforce shariah
latter is not tyranny , former is
i dont claim that talibs r doing it perfectly by any means but here we are talking interms of a best case scenario.
Zulm is NOT flogging someone guilty of a crime ( which justifies flogging) Adal is giving that punishment.
Even though to non-muslims it may seem opposite