As a german living in spain, i feel your pain. While I do speak spanish around B1/B2 level, it took a lot of time and effort - probably the biggest effort in learning something after uni. People are often "you should speak the language if you life there" - yes, agreed. BUT: Hell, if you are a professional entrepreneur, you are already not working 40h week but way more. If in your day job you speak english anyway because it is international, you hardly practice it. Especially in the EU we are taught that we can move freely between nation states - but reality of learning a language takes years. I learned english at age 10, so am practicing for over 30 years now and still learning and anybody could spot that I am not a native speaker. Countries that rely on foreign labour and advertise agressively on skilled immigration (such as Germany does) should not have those strict language requirements. Especially since german itself is a very difficult language.

None of this people opining “just learn the language” have learned a second language while working as adults, let alone learned German. You can get to A2 level pretty easy (in most indoeuropean languages at least), but jumping to B1 can seriously be a year or more of studying. You have to be able to handle basic daily situations in the given language and understand what is said in a TV or Radio show. With practice you can get there especially if you live in the country and force yourself to speak the language, but easy it is not.