I don't know exactly what it means "disabled (routed)", but mine says exactly the same. Just checked.
That is the way it's supposed to appear when enabled, as shown on every site I've seen the tutorial, so evidently serves the purpose. It's also one of the top things to do after a new Linux install, is enabling the Firewall. Other versions of Linux (non-Ubuntu based) will have a different approach to this & many other things & is why I stick to Linux Mint.
Opinions vary on this, many feels safe just because they're behind a router with a NAT Firewall. While it's certainly better than nothing, it's not the same as a true Firewall Appliance (or standalone hardware Firewall).
However, few home users bothers or even knows of these, even though these can be the ultimate solution to restrict what their children are exposed to on the Internet, and limit guests from accessing. The drawback is cost. Were it not for the price tag, I'd have one of these on my home network.
Just as Windows recommends the use of firewall software to prevent basic intrusion attempts, the Linux user should too, especially when connecting to a network other than their home one. And just as there's a basic Windows Firewall, the ufw Firewall provides the same, if not better, protection. Just set & other than check status sometimes, that's it.