No it's not bollocks.
If AB is going to do something different to the policy that KS was elected on then that leads to instability as we have an unelected PM who wants to do something different to the man who was elected.
That's right...the man who was elected. Every party puts forward the person who is the leader, the person who will be PM if they win.
Otherwise, why bother putting forward a leader at all-why not just say-Vote for the Monster Raving Loony Party and we will decide on the leader, the PM, if we win?
Why bother putting down a personal name on the Ballot Paper. Why not just list all the Partys that are standing and you vote for the Party, not the person because by your logic, the person is secondary to the party.
Just ask Our Ange-she will tell you why there should be a General Election if a PM is changed without an election, as she was almost frothing at the mouth when the Conservatives did the same trick.
So, an election would give us stability.
The PM would be someone the country voted for, that the majority wants-that's stable. Instability is passing the job to someone who might have their own agenda that is vastly different from the person who was actually put in power by the electorate.
Grabbing power by the back door is a a big Fuck You to the electorate and, in this particular case, a cynic might say it was always the plan to stand KS as PM just to get in because they knew AB would not win an election and then, a couple of years later get rid of KS and push in AB.
Who knows. If AB wants stability, wants a mandate, let him call an election. he won't because there is always a chance he might lose and no matter what else, you're told-that's the reason right there.