I do not believe, nor trust, three letter agencies
The Russians are indeed an enemy. Dirty politics may have cornered them into it, but regardless, they are an enemy on the order of China, Iran, and North Korea.
“...a court-authorized technical operation...”
A court actually AUTHORIZED Trump’s people to do something? Well, that’s good news! /sarc
The advice to "Replace End-of-Life and End-of-Support routers" and "Review and implement firewall rules to prevent the unwanted exposure of remote management services" is just basic good housekeeping for users who can keep up with things.
Specifically, "Legitimate users can also reverse changes by logging into web management pages and restoring desired settings (e.g., factory default settings)."
One might expect "individuals in the military, government, and critical infrastructure sectors" would be and remain competent in this, but it turns out such public servant types aren't. This probably is one reason some of us do not place complete trust in the "on line" world.
Now do something about all the Indian scab labor being imported and stealing Americans jobs.