There is no rule to say it’s low poly. Sure it looks like low poly.
Because it’s all about getting the shape with a minimal amount of vertices.
If this is the shape you need to get a good knight shape object.
Hurray, you’ve done it, using low poly.
You can optimize, for example, the head could lose some vertices. But then you create a face with more than four vertices (N-gons). And lose the option to easily create edge loops, for more detail if needed.
The reason for low poly, it to have a study object to manipulate vertices. Not that many to make it difficult for the mirror proces of creating a knight.
Try to search on this forum, many others have asked this question.