Another Brit in Germany here - and all the people I know, or have met, who know I'm British ask me what the heck happened. Then they ask me if I'm ok and if I've done everything so that I can stay.
In fact my local authority contacted me (and my family, we're all Brits) at the beginning of February to say "if you apply for citizenship before the end of next week, we're fast tracking British applications to get them done by 29th March" and they did that so we could keep our British citizenship.
The German authorities have been more interested and taken more care of us than the British.
I was going through an airport in a EU capital last week and everyone who saw my British passport made some comment - and mostly it was the same thing. Aghast at what Britain has done and friendly enquiries to see if I'm ok.
Not like what my EU27 friends in the UK have reported.