I have to agree with you that we are closer to Czechs than to Scandinavian people at least as measured by R1a distribution.
But still this so called Viking DNA is more frequent in Scandinavia than in Germany and take it for granted there are
NO similarities between us and Norwegians (30% R1a among males).
According to R1a tests we are closest to Lusitania Sorbs in Germany and to Russians.
Point.But assumption that haplogroups distribution can influence our mentality or beliefs is wrong.
It would be kinda modern racism lol.
southern:
Sometimes it is very difficult to tell a Czech apart from a Pole in terms of appearance,for example a Czech from Ostrava from a Pole from Katowice.
So what ?
Does it refer to their mentality ?
Poles from Silesia are on average strongly religious people, Czechs mostly atheistic.
Same goes for Russians and Poles - we look very similar, our languages sound similar but Poles are product of Sarmatism, Liberum Veto, Roman Catholic Church influences and Russians were mentally formed by Mongol Yoke, absolutism of czars, Orthodoxy, last but not least communism.
As for our drinking habits -
Yes ! They are similar for R1a haplogroup plus Germans lol.