Honestly I’ve seen some attitudes and articles that “housework isn’t exercise” and… I’m guessing such people don’t do much housework? At a minimum, it could often be a lot of walking, which is fine low to moderate exercise.
Have you ever found housework (or chores) to be good exercise?
I find this train of thoughts void of a very important variable: there’s no single type of homework and while some might be definitely positive for health, both mental and physical, others are the opposite of that.
For example, gardening vs painting walls with a toxic fungicidal paint. Housework? Housework!