The tension is that Security and Dev parts of the stack remove the actual troubleshooting capabilities of the Network layer without opening up the tools that are supposed to replace them.

It's not a problem if Network can still do their job. It's a whole other matter to expect Network to do their job through another layer. You end up with organizations that can't maintain their applications and expect magic fixes.

Orgs that are cooperative probably don't have this issue but there are definitely parts of some organizations that when one part takes capability from another they don't give it back in some sort of weird headcount game despite not really wanting to understand Network to a Network level.