Conservatives plans to further cut child benefit
I would rather saw my arm off than vote Tory, and I have in my time voted for parties a long way to the left of any Labour manifesto (and I voted Labour in 1983, as a benchmark).
There are no plans to further cut child benefit, or at least, not the ones Alexander "leaked". Those were policy proposals from policy wonks, many of whom aren't even Tory. They don't become plans until someone actually accepts them and talks about doing it.
A common trope in ministries is that a politician says "we need to cut £Xbn" and the response from civil servants is "well, minister, you could do that, but it would involve disarming the British forces and giving them wooden rifles". That is not, in any way, a plan to disarm the British forces.
A ministry were asked for proposals on how to save money on benefits. Amongst the options are some politically palatable ones and some politically unpalatable ones. It is for ministers to decide which. Claiming that any proposal, which may be deliberately overstated by a ministry concerned about it own budgets, constitutes a "plan" is just scaremongering, and part of the reason why a lot of people don't listen to political commentary of any sort.