Consumption of red meat has been consistently linked to cancer, specifically of the gastrointestinal tract. The ingredients in Beyond Burgers and Impossible Burgers have not.
In the short term, I consider them healthier because of that, but I certainly don't think that processed foods are healthy in the long term, regardless of whether or not they contain animal products.
Source: https://health.clevelandclinic.org/link-red-meat-cancer-need...