Should Brits in the EU be worried about the escalating tensions between London and Brussels?

With the UK government prepared to override parts of the Brexit Withdrawal Agreement and the EU responding by launching legal action on Thursday, should Britons in the EU be worried about their future rights? https://www.thelocal.se/20201001/should-brits-in-the-eu-be-worried-about-the-escalating-tensions-between-london-and-brussels