It may well be that the timing has something to do with current political news.
But whether this defection announcement’s timing was by design or accident doesn’t really matter. Labour’s bogglingly bad decisions, disillusion with Starmer, ill-temper and festering hatreds will rumble on without any lessening of topicality or news value, whatever happens on the right.
If there’s any consolation for the Tories it’s that these defections are happening when they’re in opposition and media attention is rightly on the government. A really nasty civil war in Labour, which they’re gold medal winners at, and it’s all over for them. For good.