Is this news article about quantum radar legit?

Quantum radar is a real thing. The description is somewhat wrong.

In radar, you send out a beam of radio waves which get reflected, and you measure them when you come back to look at the objects they were reflected off of.

In quantum radar you send out a beam of radio waves, which are entangled with another beam. This first beam gets reflected. And when it comes back, you interfere them with the other beam to learn about the objects that reflected them.

So there's no faster-than-light transfer, because the beam comes back before you extract the information (just like conventional radar).

There are real theoretical advantages to using quantum radar, but it is also quite a bit more complicated to make it work. The article says that it's not clear whether this is a real device yet or whether it's still vaporware.

Yes. See https://en.wikipedia.org/wiki/Quantum_radar.

The particles retain their entanglement at large separations.

This question discusses the issue of whether this implies faster-than-light information transfer:

Quantum entanglement faster than speed of light?