Swede here, it’s really prevalent in Sweden to just use first names irrespective of who it is. Your boss, boss’s boss, your doctor, or as the case of an athlete winning an Olympic medal: even the prime minister, even calling her a nickname[1].
I believe it is partly due to a reform back in the days dropping thou and titles[2].
I believe it is partly due to a reform back in the days dropping thou and titles[2].
1. https://www.aftonbladet.se/sportbladet/a/Bj4Lkg/os-2022-nils... (Swedish)
2. https://en.m.wikipedia.org/wiki/Du-reformen