Comment by bigpod

system extensions are just as usable on bootc based systems but bootc based systems allow for much simpler composition, you dont have to know about all the intricacies of linux filesystem tree to install a set of packges for your own image as you can base uppon what someone else did easily using industry standard semantics and use actual package managers. And on top of all that it uses a far better distribution system, the oci's distribution spec