So, this scenario isn't exactly uncommon in the startup world. It happens all the time. But because she's a minority female and her competitor is a white man, it suddenly becomes an example of white supremacy and the patriarchy conspiring to oppress her. The VCs who funded the competitor? Obviously racists and sexists, and she called them out explicitly as that on Twitter.
I considered reaching out to her to offer some perspective, but ultimately demurred. Why? I didn't want to be caught in the wurlitzer. Better to let her make more problems for herself than offer a sense of perspective that could get me cancelled.
This applies to both men and women, from any background. Even forgetting the potential for these accusations to be levied on us, it's simply a legal liability to have someone on the team that makes public accusations on social media without evidence.
The last thing anyone wants is a lawsuit magnet on the team. Lawsuits are extremely expensive, even when you win.