That being said, they still come out ahead in comparison to animal-based foods due to the fact that you need to grow massive amounts of feed crops to raise other creatures. It turns out that pretty much every environmental metric comes out ahead

Transitioning to plant-based diets (PBDs) has the potential to reduce diet-related land use by 76%, diet-related greenhouse gas emissions by 49%, eutrophication by 49%, and green and blue water use by 21% and 14%, respectively, whilst garnering substantial health co-benefits

[...]

Plant-based foods have a significantly smaller footprint on the environment than animal-based foods. Even the least sustainable vegetables and cereals cause less environmental harm than the lowest impact meat and dairy products [9].

https://www.mdpi.com/2072-6643/14/8/1614/htm

In terms of workers, the meat industry is arguably worse on that front. It's one of the most dangerous industries anywhere for workers

US meat workers are already three times more likely to suffer serious injury than the average American worker, and pork and beef workers nearly seven times more likely to suffer repetitive strain injuries

[...]

Amputations happen on average twice a week, according to the data

https://www.theguardian.com/environment/2018/jul/05/amputations-serious-injuries-us-meat-industry-plant

And there's great risk of PTSD from the workers that you don't see for harvesting crops

There is evidence that slaughterhouse employment is associated with lower levels of psychological well-being. SHWs [slaughterhouse workers] have described suffering from trauma, intense shock, paranoia, anxiety, guilt and shame (Victor & Barnard, 2016), and stress (Kristensen, 1991). There was evidence of higher rates of depression (Emhan et al., 2012; Horton & Lipscomb, 2011; Hutz et al., 2013; Lander et al., 2016; Lipscomb et al., 2007), anxiety (Emhan et al., 2012; Hutz et al., 2013; Leibler et al., 2017), psychosis (Emhan et al., 2012), and feelings of lower self-worth at work (Baran et al., 2016). Of particular note was that the symptomatology appeared to vary by job role. Employees working directly with the animals (e.g., on the kill floor or handling the carcasses) were those who showed the highest prevalence rates of aggression, anxiety, and depression (Hutz et al., 2013; Richards et al., 2013). https://journals.sagepub.com/doi/10.1177/15248380211030243