Of course it's concerning.
Most of all it's concerning that so many people delight in every piece of negative news. While some of the relocations involve all 20 staff of companies you've never heard of, most are positioning a small percentage of their workforce in a Rump eu state - this was always going to happen. The words "may" and "some" do occur frequently and are confused with "will" and "all".
I look back to the Big Bang in the City in 1986, when the City of London changed the rules in order to allow companies to compete with New York. In fact what happened was that the old guard sold out and retired to country estates, the Americans brought the Wild West to the City and took over almost all the established Stock Exchange market companies. The philosophy changed from "do the best deal for your client and we might make some money too" to "screw the client to make as much as we can as soon as we can". The clients, by the way are often current workers' pension funds.
The outcome was not predicted by any pundits, no matter how well regarded they were.
We are undoubtedly in for a rocky ride, but nobody knows how it will actually play out. One thing is for sure, journalists are free to make their treasonable comments and will not be held to account, but their activities do not help in any way.