from my experience in game dev, I can say that use this model save from a lot of problems cause:
1. they are easier to model since they don't need as much details as humans
2. since they are easy to model there is a lot of these models online which just make it faster and less energy consuming
3. you can easily avoid the uncanny valley with these, since they have a cartoonish look they don't make feel as uncomfortable as if they were humans models with this style will look like