Not quite sure what you mean. Obviously recent weeks have been bad for the government, but these things happen when you've been in power for decade (actually they happen long before then as well, but don't get reported on in the same way). Such is politics. It
isn't really cyclical, at least not in Britain, but certain trends and patterns have been repeated on a long term basis.
BBC just makes it sound like the funeral has already begun.
The BBC likes to make things sound more serious than they actually are.
As a random point of interest, quite a few people have said things this week that they may well come to regret years down the line. Funny that politicians never really learn on that front.