The Swiss are pretty serious about Bitcoin: Lugano, PlanB, Geneva, and tons of places that accept Bitcoin across the country. That being said, imnnot too familiar with the Swiss Bitcoin Institute's work. This paper was a good introduction.
The central challenge, therefore, is not technological innovation but sociopolitical coordination. Migrating a decentralized, global network like Bitcoin to a new cryptographic standard is a monumental undertaking fraught with risk.
The community faces a dilemma: do nothing and risk a period of chaotic redistribution of wealth to attackers, or implement a protocol change that could be seen as confiscatory, potentially “freezing” un-migrated funds to prevent theft. This decision-making process, which must occur without any central authority, will be the ultimate test of Bitcoin’s governance model and its viability as a long-term store of value. The outcome will serve as a crucial lesson for governments and financial institutions as they prepare for the broader quantum transition.
I'd say they glide too easily over the scenario where we do nothing and it ends up being okay. But admittedly, it's not the sort of thing you want to be wrong about. And I do like the report's emphasis on the social aspect of the potential dilemma.