Many of the SEO tools available have options that help you audit backlinks. While this can be a useful tool for tracking backlinks in general, it can be alarming for a lot of site owners or marketers who see things about "toxic" backlinks or warnings about harmful links pointing to your site. It's natural that while you're working hard to generate traffic to your site and leads from that traffic, you want to do whatever you can to keep the site in good health.
So if a tool is warning you that your backlinks are toxic, you should get rid of them, and the easy way to do it is by disavowing them, right?