The good thing about making this about WhatsApp is that UK MPs and most political hangers-on use WhatsApp *extensively*. If opponents point out that government scheming, speaker circuit bookings, fast-track lanes for government contracts, and the like will become more difficult, then maybe MPs will reconsider.

Unencrypted and on-the-public-record political party and government communications will worry MPs more than it worries "terrorists and paedos".