Could have been avoided by a fudge along the lines of:
"we need savings, we'll be talking to the IMO in this regard. The automatic right will go, we'll review the income limit, it will be substantially increased so that only those with high incomes will be affected"
While I'm not gone on the 'guilt trip the IMO using the pensioners as bait' strategy, maybe it needs to be thrown in, "in the national interest".
Having uttered the above relatively meangingless warning they could have taken the temperature of the nation and set a limit of, say, twice the means test for the pension with special provision for those with severe/chronic medical conditions. The could always cut it a bit tighter next budget if the money was needed and when everyone had their head around it.
As it is even the 1% levy is up for grabs since everyone smells the FF fear & weakness. Now I'd prefer if there was no levy too, but at some stage ends have to be made meet. I'd rather be carving up the civil service and cost overruns but, in the real world, you have to expect the taxpayer to be part of the solution.