no its not ,its people using them who don't know how to with a bit of sense.Is it not the power harrow that's causing you surface capping ,dreadful tool imo
a rota spike or rotavator is actually harder on the soil structure as they throw the soil violently against their body to break it down more using brute force.
A rotavator causes localised (beneath the blades) compaction as well like discs can do .