"It doesn't look like Hestia..."
First off, are they mad she's Black? A lot of people are mad she's Black. Get over it. Myth isn't history, we need no excuses. Even if we WERE going for history, the Peloponnese islands and Asia Minor weren't a single-tone melanin region: they were widely known for trade even before any of the Great Kersmooshenings of culture, and even more widely known after that.
Second off, are they mad she's fat? A lot of people are mad she's fat. Get over it. This is a goddess who keeps her people safe and healthy enough to GET fat. This is a happy goddess. This is a goddess who does not care how much space she takes up, because it is her space to take, and her people should feel the same way. And on top of that, also a sign of hers...
Are they mad that she doesn't "look like the statues"? OK, here we can sort of dig into it. Thing is, Hestia didn't get a lot of statuary, because the people most likely to venerate her as a primary force in their life weren't the kind of people to build monuments, they were the housekeepers, the hearth-keepers. The cooks, the cleaners, the poor. No one would go without offering a prayer to Hestia first, but she wasn't a glamourous goddess for the elite, she was a stay-at-home caretaker. Her symbols are the cooking and warming flame, the brazier, the stove. Yes, classically, she wears a veil for modesty, but this Hestia still wears a veil: just more as a shawl, to keep the warmth close and nurture it.
Supergiant's Hestia bears two fires on her person: a warming fire in her throat, to welcome and encourage, and a cooking fire on her head, to share and support. As with all fire, they're dangerous if you don't respect them, but they're not here to serve as brands of war to hurl at an enemy's roof. Her staff holds fragrant herbs and other welcoming votives that would be left at the hearth as offerings, to make the home a nicer, more friendly place to not just sleep, but to live.
Are they mad because her hat and head design kind of blur together? Yeah me too, kinda, I really think that her hat should be a little wider just to break up her outline a little, maybe give space for a few carefully placed dangly implements. But honestly, the design is great.
