If someone advertises their software's cryptography as being "quantum-proof", it should be a slight red flag.
We don't know if it's even possible to build and operate a quantum computer capable of implementing Grover's/Shor's/etc algorithms with quantum runtimes. Once we have reason to see that it might be viable, such a computer will then have to be constructed. Right now, we've only managed to build quantum computers that can flip a few qubits correctly (obviously I'm oversimplifying).
Choosing cryptographic standards in the present based on quantum computing capabilities in the future is like deciding not to have kids because you'll have fully intelligent simulated kids in the Metaverse. Be realistic. There are great reasons to pick algorithms that happen to be "quantum-proof", and great reasons to have/not-have kids. There are also bad reasons. Something being theoretically possible isn't the same as something being viable in a given timeframe.
Some orgs like IBM feel confident that they can build a 127-qubit computer in the near future. That's orders of magnitude lower than what's required to correctly implement Shor's Algorithm. And no, there's no "Moore's Law for Qubits"; Qubits aren't transistors.
I included the off-by-default option to account for Grover's Algorithm in
https://sr.ht/~seirdy/MOAC because MOAC is honest about being a theoretical approach to conceptualize how much entropy is overkill when considering a naive brute-force attempt of literal cosmic proportions. Don't use quantum computing capabilities to rule out good options.
Saying it's "too early to worry about X" implies we have reason to believe that we'll eventually have to worry about X. For quantum computing, *we don't even know if we'll ever have to worry about it*. Research will reveal if quantum algorithms are viable, *then* it'll be "early". *IF* the algos turn out to be viable, we'll have to wait a while before they're implemented, and even longer before they can scale.
An extreme example that illustrates the same principle: would you choose a life insurance provider because it promises not to adjust your claims if reanimation from the dead becomes possible? Sure, researchers may have re-animated an amoeba. But let's be realistic. Make decisions based on *sufficient* evidence.