[dTal]

Tory party infighting. No other reason.

If it were actually a question of scandal, there are much larger ones that could be receiving media attention, like the enormous quantities of money embezzled from the government (read: taxpayer) under cover of the pandemic, or the deep connections between Tory party / Brexit campaign funding and very dirty Russian money. But those would reflect badly on the entire party in power, not just Boris. So we don't hear about those.

This is a nice, neat, Boris-only scandal. Perfect fodder for the periodic ritual cleansing of sins.