alt Hacker NewsThis is true, practical quantum computing is always "just a couple of years away".
At the same time, moving to more secure encryption really isn't difficult. How many times have algorithms been deprecated over the past 20 or so years? It's time to do it again.
Let's just make sure that the NSA hasn't worked in any backdoors. At latest since Snowdon, anything they work on is suspect.
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It'll be a 90/10 rule: 90% of the upgrades will be straightforward. It's important the 10% that'll be hard early. For many it's probably already too late.
I hard disagree with your assertion that moving to more secure encryption isn't difficult. It is insanely difficult, especially at global scale.
And in the process immediately convert huge numbers of devices into ewaste. Then check the excuse calendar again for tomorrow's reason to deprecate yet another batch of "legacy" ciphers from openSSL.
There is no clear evidence that the risk of "a practical post quantum computer would arrive in the next 5 years" is greater than "post quantum scheme X is broken" for any scheme X. The only way to go is hybridation and it is quite hard from an engineering point apparently.