Are there scenarios where the police could fail to investigate, knowing the reputation of the shaddy insurance?

If true crime podcasts have taught us anything, it's that police don't really need an excuse to do a shoddy investigation.

And maybe silenced? seems like professional hit from details so far.

We can't know that. There are plenty of avenues for a citizen to get a silencer, long range rifle, and places to train.

It's at least a 5hr drive from NYC to get to anywhere remotely gun-friendly, like New Hampshire.

Suppressors are legal in CT. Regarding a range, you don't even have to leave the state.

And in PA

I kinda doubt that. Suppressors aren't that hard to come by.

It's still slightly impressive. The lobby of that hotel takes up half a city block and has many entrances and exits. There are lots of ways to get in that are not necessarily the front door.

If I were approaching this professionally I'd be waiting near the check-in desk or elevators.

Yes, a professional's getaway vehicle is always bicycle.

It has a lot of signs of a professional hit the more details come out.

The ebike was used to get into central park to somewhere without cameras and change clothing etc.

The video is somewhat consistent with a how a professional might appear, calm with reload/jam, back to camera then flee down alley.