Pentester/red teamer here, this point from the article is the key:

"Properly trained, staffed, and funded network security teams can implement the known mitigations for these weaknesses."

You need someone who actually understands networking tech at a deep level to accomplish anything beyond what expensive tooling/devices will offer you. Otherwise, you're always going to be limited by whatever vendor you're using and the capabilities they build in, assuming you're using the solutions to their full capability.