Thats correct re placement in the rear but the fronts are surprisingly good for the rockers (relatively speaking, likely not in Canada, Pacific North West, Alaska, Norway, Iceland, Finland, etc) and good for blocking the area where sand, dirt, water nornally accumulates under the rocker covers.
Just another inexpensive, minimalist, lowered or stock ride height option for people. I've tried most of what's out there (from EV vendors, to Canadian shops, to tried/tested mudflap only brands) since the days we were making our own mid-2018.
So many use cases, and even more esthetic opinions.