Practical QC is like nuclear fusion. People have been saying we're only a couple decades away for decades. And yes, we have made a lot of progress, but no one really knows for sure how far off we are. There might be a huge breakthrough within a couple years, or progress might stall for decades.
I think that it is absolutely worth researching post quantum cryptography, and if you are a high value target, maybe even using it. But it probably isn't necessary to use it everywhere yet.
I think that it is absolutely worth researching post quantum cryptography, and if you are a high value target, maybe even using it. But it probably isn't necessary to use it everywhere yet.