(Edited in response to feedback)
Dumbledore says he meant Harry to have wicked step parents—readers excuse this because Harry didn’t have wicked step parents
Dumbledore sets fire to a living thing—even in story, he is excused of this with speculation about how he could have seemed to do that without being evil, and readers excuse him too
Dumbledore probably said that he burned Narcissa alive—readers excuse this as unlikely, pick other suspects
Dumbledore says it is necessary for bad things to happen instead of good—readers buy it
Dumbledore puts off taking down the man behind WWII in Europe—readers buy his excuse that it wasn’t possible
Dumbledore gaslights Snape—readers excuse him saying that isn’t what he meant to happen
Dumbledore tricks Hermione into doing dangerous things by humiliating her—readers excuse him because he knows what he’s doing
When do we stop making excuses and start noticing the pattern under them? Dumbledore isn’t a good guy, he is a schemer who thinks of himself as a good guy. But he is willing to do very bad things for very bad reasons, which is not a good guy thing.
Steroid use does not make good soldiers. Soldier-fit is different than gym-fit in appearance and function. Bulk does not provide performance increases in soldier duties and does cost more calories to maintain. Testosterone-related behavior issues are inconvenient in a rigid hierarchy.
Judicious use of stimulants, on the other hand, makes very good soldiers and may be started and stopped almost at will. Dopamine-reuptake-inhibition-related and withdrawal-related behavior issues are almost identical to the stress-induced behavior issues already ubiquitous throughout all armed forces.