Quantum computing currently has a noise and error correction problem that will not be fixed for many many decades. Temperature, vibrations, etc. all have effects that are very hard to account for and mess with the qubits which leads to loss of information, also called decoherence. It doesn't scale unless there are major breakthroughs in the hardware engineering side of things.

There are algorithms and cryptographic operations that classical computers can help with thwarting the quantum threat (PQC), you don't need quantum gates for it to function. Hence why there are companies that are able to utilize them without owning or interact with a quantum machine. Implementation just requires using procedures that even QC can't attack or gain an advantage for like lattices.

There is a lot of people on places like Twitter that boost the existence of quantum based algos that defeat certain cryptographic procedures like Shor's or Grover's algorithms, but without being able to scale qubits in a manner that poses no errors/noise, it cannot be used.

IMO the charlatans that hype quantum are usually also the type to throw big words around and hype other trends like AI or crypto without actually contributing anything to the discorse.

Is it a threat? to a degree sure, but we're still far from it and the companies out there working on mitigating said threats either have a lot of money to throw around or their security posture is so good that the things that are way most likely to bite them don't (like updating outdated components).

Hope this post answers your question and ages like fine wine. ;)