Nothing really special for 5G. The governmental bodies (and the tech firms involved) use the term "5G" just to gain visibility.

I did see some of those ambulances running multiple streams from different perspectives, though. Is the bandwidth of 4G networks capable of doing that?

Wider bands, lower latency, less congestion, the promise of switching off legacy in the future (with SA)

Network slicing allows critical bandwidth usage to be prioritized absolutely. Can’t do that with LTE.

Not to mention the sheer density of connections that can be serviced by a 5G radio over an LTE radio.