Ok, just stop. They were not being treated like they weren't human. They were being treated like criminals who are dangerous and we don't know what to do with them. They were fed, housed, kept clean, and were not tortured. They had it ok. Particularly since they themselves could have given two ****s about any of the people that they've robbed or killed.
The thing is people, even criminals, have rights. It's animals who we can do whatever we with to as long as they are fed, housed, cleaned and not tortured. When we deny those rights and simply care for them, we're actually treating them like animals, or children, if we're being generous. When we reach for justifications (They didn't care, so we don't have to care about them!), not only do our assumptions not hold up, but we literally become uncaring criminals - exactly what we say we don't like - in the process. Yikes.
It doesn't have to be a big deal. Oliver has had hypocricy just as bad. Everything with Malcolm this season has been positively mental. We pointed and laughed and moved on to the parts of the show we like. What's throwing me is that we're not pointing and laughing here. We're like "No, denying human rights is the heroic thing to do!" I can't get down with that.
Regardless, I'm really glad the show addressed it, and I think by lampshading: hey, this is wrong and totally unacceptable, and showing the negative consequences: the girl who went in just trying to run away with her boyfriend is now a rage-fueled killer, and of course, now you've turned all the criminals into a team that work together. I give them big kudos for that.
They had powers for like 3% of their existence. They've worked fine before and since.
And Flash did take their guns in their second appearance, the only time he was in a position to do so.
I think part of the weakness with the Flash as a show is that he always has an opportunity. Even people with powers, he found Weather Wizard and then he put him in jail before Mardon even knew what was going on. Flash was distracted during his first meeting with Cold. After that though? Meh. We've also established he has an ability to search the city. All these things we kinda overlook, but it bears mentioning when you want to add even more suspension of disbelief about Flash not using his powers, or using them inconsistently. Now, this suspension of disbelief definitely happened in comics, but just as I expect more realistic detail in the depiction of people and objects between a comic book/cartoon and a live action tv show/film, I expect a different level of fidelity when it comes to the consistency of superhuman abilities. Especially because comics spread over 20 years, and the show is around 20 episodes.
Now, I may have missed the details in his deal with Snart, but is part of the deal how Flash won't just take their guns? If not... I'm not sure the Rogues can really be all that relevant, that is, without Flash choosing not to use his powers.