Remote workers, what's your plan if your job disappears, for whatever reason, and you are unable to find a replacement, locally or remote, with commensurate salary? Is this even a concern for you?
Why would this be only a concern for remote workers? You'd have the same potential issues if your local job disappeared for whatever reason, with similar potential courses of action available.
I had a longer response written out, but to simplify, I think the risk is if remote work ever becomes hyper-competitive, falls out of fashion, or otherwise not able to fit ones needs. I speculate that's far more likely to happen in the remote than local job marketplace.