Can confirm that it’s mostly regional. Having spent 15 years in northern Germany, all I ever heard on the topic was something like ‘just let people do what they want’.
Although, and this might be relevant, none of the people I’ve been in contact with are religious or anything of the sort.
Damn, I live in Germany and consume a lot of football and adjacent content, but I’ve never heard of that. Might just be down to me not actively seeking news on Werder though.