There is need for the government to control the development of quantum computers so it wouldn't be used to steal from old or reused wallets that are vulnerable to attack and exploit.
That will not be entirely possible. While they have indeed prevented "private" entities to develop nuclear weapons, one should never be sure that that can be achieved for other potentially harmful technologies. Quantum computers are, in addition, easier to deal with than nuclear weapons. You don't need tests on a remote island, airplanes etc.; basically you need a good laboratory. And of course North Korea is a potential developer of QCs too and could use it to improve Lazarus' crypto hacking capabilities ...
As proposed in
this post, I've launched a little "campaign" (or more humbly: a reminder) to move coins from re-used (and P2PK) addresses/UTXOs to freshly generated addresses.
I don't know if there was a similar thread yet (didn't find it in "Beginners & Help") but I think that anyway such a reminder should be launched every now and then, especially when fees are low as now (when I wrote the post it was at 1 sat/vByte and weekend is beginning). So feel free to answer/bump:
Fees are low? Make your coins more private and (almost) quantum safe!