Yes, they were. Not immediately, but in many ways that may feel foreign to non US citizens, it happens at the polls, in the electorate, the way the government handles itself going forward, new policies and ideas etc.
Obama was elected in no small part due to outsized opposition to policies of the previous administration.
Practicing democracy isn't always fast nor is it perfect, but it does work. The question of what to do once we realized we needed to reverse course is up for debate, but yes, things changed, people lost their positions, power, and there are reforms and accountability - the CIA is subject to more congressional oversight, for example. They're banned from using blacksites and the CIA is no longer allowed to hold foreign nationals for extended periods without representation.
There's this weird thing about how the US waged two wars too, in regards to the rules of engagement. There were 100% bad actors, and many (unfortunately not all) were held by military and civilian court for war crimes, re: blackwater contractors, the case of Pvt 1st Class Andrew Holmes etc.
The US military has official rules of engagement for treating people humanely - which are in fact expected to be followed - and people were held accountable for not doing so.
Not perfect mind you - but yeah, there were huge changes as these revelations came to light.
International relations can be bizarre, and again, I'm no apologist, we shouldn't have even invaded in the first place, but do you think the Russian soliders in the Ukraine will be held internally accountable for war crimes?
Do you think the Chinese would?
Do you think they are held accountable in any way for other types of crimes, like foreign bribery, corruption, supporting human rights abuses?
Can you even freely appeal to the Chinese population?