Put away your pitchforks and tinfoil hats.
This is similar to regulations already in place which provide an option to shut down the private cellular network during national disasters.
There is nothing in the act to allow suppression of dissent, and if there were, it would be nullified by various existing bodies of law, including but not limited to the constitution.
If you're worried that they are going to simply ignore law like the previous administration, then debate over a law is moot.
Further, this is codifying behavior that you'd want to happen:
Hacker X develops a new malware variant an order of magnitude more virulent, by exploiting a vulnerability in Provider Y's infrastructure.
Only by shutting down that provider until the threat can be eradicated, can compromise of the rest of the commercial networks be avoided.
Provider Y delays, citing some nebulous concern, trying to couch their real fear of losing money.
Provider Y continues to delay, resulting in complete compromise of their network.
At some point, Authority Figure Z steps in, orders troops to take control of, and shut down provider.
After the crisis is over, Y bitches about Z overstepping it's authority, and pisses away a lot of money on legal motions that ultimately go nowhere, as no one is going to sanction the party that saved the day.
What the act does is codify the actions of Z as within Z's scope of authority, eliminating some of the delay, and post-crisis legal hi jinx.
It also assigns the responsibility for this decision to Z,
The act also mandates a number of things that should be happening anyway, and are due for being codifed.
