I wouldn't call her a good billionaire, but I think she's as benign as billionaires get. At least she does things like pay her employees a good wage and gets people involved in the political process.
And, as far as I know, she isn't responsible for anyone's deaths.
I'm sure she still stepped on a lot of necks up the pyramid, but compared to a shit ton of other billionaires out there...
Billionaires can't be benign. It's impossible to make a billion dollars in a lifetime without taking more than you deserve. Someone overpaid for the product or someone was underpaid for the work (probably both). Billionaires prey on that loss, and it's not as if they are Robin Hood giving back to the poor. If that's not malignant, I don't know what is.
The thing with TS is that she is not supposed to be like other billionaires. Other billionaires, most of them, have a different motivation, this is, to make more money. They are supposed to be entrepreneurs but at that level they are more like gamblers. TS is supposed to be an artist and her motivation is supposed to provoke a reaction in people's emotions through her craft, which is making songs. Hell, at this point she could be singing and composing for free and giving away money. She could just license her next album to some cause, like fighting against cancer, and just let them use the gainings to fight cancer. That's why I don't even give her words my attention. She demonstrated that her motivation seems to become richer and richer. As any other billionaire she has all the attention she wants and more, because in the end she is like any other billionaire, a hoarder forgetting about the importance of other people's lives.