No seriously, most Superman Expies released in the last couple of years and even several AU Supermans have been mostly evil people. Homelander, Omni-Man, Brightburn, Justice League: Injustice and even the DC Extended Universe Superman to some degree all present Sups as this evil person or someone who almost seems confused by the idea of helping people.
One argument I remember hearing from the creator of The Boys was that anyone who had the power and fame of Superman would be a Sociopath which is a view Invisible and Brightburn also seem to believe with the creators of said films saying something similar that anyone who has power like that would be a villain. However, a problem that this argument runs into is within each series themselves as people are often not born bad, often they have to be made into what they are be it villain, hero or something in-between you don't just wake up one day and go "I'm now a supervillain".
Homelander and Omni-Man were both raised in such a way that them being heartless killers was something that they saw as completely normal and faking being good people was just something they were also trained in, either by accident or by intention. And Brightburn is clearly not mentally well given how he acts. And the Sups in the DCEU has parents who suggest that letting people die is not bad if it means he'll be safe.
In order to make these supermen act less heroic the stories have to write them in such a way that makes it so that they can only be villains which invalidates the ideas that anyone with this sort of power would be good because they've made it so they can't be good. It's not the power that made them this way it's the way they were raised.
And even if these characters change (which I think Omni-Man does and I think Homelander does pull a heroic sacrifice and Sups was always intended to eventually act like Superman) the fact remains that all these characters start out either as full on villains or as someone who isn't sure what it means to be a hero.
That's what makes Danny so interesting as a Superman Expy. She's got her dark side (she considers letting her father get killed, she enjoys fighting and hurting criminals and supervillains and has more then a bit of a temper) but she is still a good person who just wants to help. Those darker elements to her are a result of not being able to handle her trauma which... yeah she's a teenager who was raised by an asshole and a somewhat neglectful mother, just gained superpowers and saw her first real friend almost die and her surrogate mother was used to kill her childhood heroes (poor girl goes through a LOT in these books). But Danny always wants to be better, to be a hero. To be someone who shows courage on behalf of those who cannot defend themselves. Not because it's fun, not because it makes a difference or to make a difference, but because it's right, it's decent an above all it's kind.
THAT in the end is what Superman stands for, to be someone who has great power and uses it to do what is right and what's most telling, Danny NEVER considers using her power to bully anyone. She defends herself, she tries to intimidate villains like Greywitch but the thought of using her powers to take over the city is not something that ever even occurs to her.
She was raised by an abusive father, but she herself never abuses her those around her. Her heroes showed themselves as flawed people but she still had respect and admiration for many of them. And she even though it would have been understandable she didn't let her father die and she never used her powers to hurt her parents or to force others to agree with her.
A while back I posted the idea of Danny joining the Marvel Universe with her becoming friends with the like of Iron Man, developing a big brother/younger sister relationship with Thor and a father/daughter relationship with Steve Rogers. Danny is such a great character that I could see her standing alongside some of the most iconic superheroes and it never once occurred to me of any of the Avengers to be wary of her but embracing as a sister in arms because for all her flaws she is still as heroic as the hero that inspired her creation.
And in the last few years of seeing other writers making stories with the assumption that someone with power of Superman would be evil and making sure that they be evil or question if being a hero is good Danielle Tozer is a breath of fresh air because she IS a hero. And yes, I could see her flying alongside Clark as the two worked to protect this little blue dot in the galaxy.
