They (all of them) know that there has been - at least this time - enough of a stigma built up around the concept of a 'back door' and at least some education on the utility, necessity and ubiquity of encryption for day-to-day processes.
Thus, they are reframing the conversation by focusing on discussion of obtaining information legally authorised via a valid warrant. No 'snooping' you see? Nothing nefarious or clandestine. Nothing to abuse or worry about: just familiar, uncontroversial warrants to help catch pedos and terrorists and murders and drug barons and rapists.
The public knows warrants - those are the things the trustworthy officers and agents on The Bill or CSI arrive with in the denouement when the forces of good triumph over the villain.
That's all our governments want: to allow those always upright exemplars of civil service to enforce the law and protect us. But the tech companies don't care about protecting us, you see; they are trying to protect the terrorists and the paedophiles instead!
Those men and women in blue know who the bad people are and they know what they've done but Apple and Microsoft and the rest won't let them bring the dangerous criminals to justice.
Our politicians have learnt their lesson. They avoid talking about the process of getting the data they want and instead plead the case of the data itself, claiming agnosticism about the technical issues.
They are doing an end-run around all the complaints and consequences.