Quantum and Photonic computing functionally works. You can go to many labs and see it in action producing results. As I stated in my original post I think it's a decade plus to get to where it states but that doesn't mean everything is fraud. Because you can't recoqnise that it is functioning and showing progress that doesn't mean it isn't.

Your skepticism is valid to some extent with some implementations but your background knowledge doesn't support your theory and clearly hasn't seen the results first hand (which is understandable of course unless you work in research in that field).

I am very curious why your point of view is expressed in this manner. It feels as if you were in a field that is now recieving less funding due to QC and PC.

It feels as if you are collating all work with any mention of quantum as one which it isn't. Also it feels as if you are assuming quantum computing is exclusively focused on brute force algorithm cryptography cracking which again it isn't. Quantum computing is exclusively any form of computing that utilizes quantum theory to manipulate data. That's not automatically "better" just more effective for certain circumstances.

There are already real world examples of quantum computing methods utilising photons that can perform security jobs that classical computing simply couldn't do especially in relation to photon pairs.

Not snake oil, just engineering and physics.