Tbh I think any kid should learn their ways on a hardtail.
These full sus 24” wheels are great for kids that have been riding/schooled since they could walk and live right next to trails.
For most though, they’ll learn the limits of what they have a gain skills while learning.
Yeah. I know. Whyte also do a £2.5k full sus starting at riders from 4'7". Another year and it will fit him.