I don't understand how anyone can witness this and not realise that the issue we have is a systemic issue, rather than an issue specifically with the PM or even with the Tory party.
Politicians are literally giving the middle finger to a public inquiry with complete impunity. If they can get away with this, then what force can hold them accountable? The voters? They lie about their policies and positions, get voted in, then do whatever they want for years. The media, completely controlled by the wealthy ruling elite, makes it impossible for any politician who would be a threat to their interests to get elected by running constant smear campaigns and puff pieces.
Electoral politics is at a dead end. The best it can accomplish is avoiding the worst possible outcomes. For a truly better world, we need massive changes which happen outside the system.