The source is Cummings - is Cummings a trusted source? Might he have his own axe to grind?
When the media all seem to be sing from the same hymn sheet (here going after Boris and his wife) media analysts focus on the question "why?" or "why now"?
Do the PTB want Boris out? Do they need a scapegoat? Do they want to boost the lockdown argument, as this line of attack seems to suggest?