There's this thing y'all don't seem to get.
Gryffindors don't give a shit about rules. The most hard-line of them don't even care about people. They care about justice. Right or wrong, black or white, there are no shades of grey. If it's just, it's always just; if it's unjust, it's always wrong. Hermione's ruthlessness makes her a Gryffindor. She is absolutely sure that she is on the side of justice in everything that she does, and it's such a Gryffindor trait.
Slytherins are ruthless, but they care about rules. Their own rules, usually, but rules nonetheless. They will impose parameters and limitations on themselves just so they have a framework to operate within. If doing something means violating their own internal code, then they're not going to do it. Even fucking Voldemort is like that. He broke every single fucking rule the Wizarding World ever put in place, but damn if he'd break his own.
And Ravenclaws? They hate rules. Fucking things just get in the way. They prevent creativity and keep people from accomplishing their goals. Ravenclaws are probably some of the most dangerous people in the entirety of the book series, because they're brilliant and creative and ambitious and prideful, and when they snap, they do not have inhibitions. They will wreck everything that ever had the nerve to get in their way, and they will never once feel bad about it.
And then there's Hufflepuffs. They emphasize equality. If the playing field is equal, then all other good things will come from there. People hear that, and they think that Hufflepuffs are pushovers. They cast them as the shy ones, the fearful ones, the insecure ones. Really, they're none of these things. They are nice, accepting, and friendly; while this is all true, but they are also entirely willing to fight anyone that steps up to the plate talking shit. Hufflepuffs will defend themselves and other people until they drop dead, and it's infuriating to see that only ever attributed to Gryffindors. Because the big difference is that a Gryffindor believes in acceptable casualties, and a Hufflepuff will knock your teeth down your fucking throat for even suggesting such a disgusting idea. For Hufflepuffs, there are no acceptable casualties; any loss of life is utterly unacceptable.
There are a lot of people that talk about House stereotyping, and then turn around and perpetuate further stereotypes. Gryffindors are not all knights in shining armor; Slytherins are not callous villains; Ravenclaws are much more than just intelligent, and Hufflepuff is not the motherfucking potato House.