The web interfaces use SDRs. They can listen to an entire band at one time rather than just a single station.

You will only be able to listen to transmissions that are within range of a web SDR. They work great for HF since that propagates a long ways when the band is open. For VHF and up, you will likely need a local receiver unless there happens to be a web SDR near you that covers the band you want to listen to.

The web SDRs may have better antennas than you do and they are probably in a place with much less RFI than you. You can use them to listen to far away places.

LiFePO4 batteries are safer and harder to ignite, but they can still go into thermal runaway and can burn. If a fire started in a battery that big, it would still spread and it wouldn’t be practical to extinguish it.

If you want to tinker with it, stay away from that DJI crap and build your own. Then you can get more than a flight or two without something burning up.

It looks cool, but I’m worried about durability. It doesn’t even make the screen that much bigger.