My personal observation from the recent Netherlands vs. Austria game, which had taken place here in Berlin, was that Austrian fans seemed to consist mostly of groups of boisterous men while the Dutch fans were more diverse - smaller groups, more women among them, even some children.
I guess that also kind of explains Tender Branson.
National Team supporters vary a lot...the Netherlands used to have a lot of hooligans and organised support from the club teams follow them alongside "normies" who have loads of disposable income and think of this as the same ...now the organised club support don't even bother. So it's a super family friendly laid back vibe. But nowhere near the best fans vocally.
Belgium since 2014 is also ridden with event goers but many take themselves way too seriously and are what French people call "footix" (I guess the German word is ervolgsfans)...hence the whistling yesterday, alongside the same fancy costume attention seekers like "Obelgix"...none of these people were present pre-2014 when we had a sh**t national team and the away stand was almost always proper football followers. If we have a terrible tournament maybe we can rid ourselves of these clowns and go back to having decent support.
Austria is sort of influenced by Eastern Europe so actually has an ultras group (which is female friendly), so is much more vocal and organised as a support, but also I imagine for this Euro has brought a lot of stag do types compared to the family -friendly Dutch.
England is well...England...