Didn't assume that. All I said was that 'those in charge will have come from a generation that overwhelmingly voted Remain', which will be true regardless. The kind of strategic thinking needed would be how to maintain their sentiments towards the EU.
It's also of note that this generation is overwhelmingly progressive in their politics, is being denied radical action on climate change, denied the ability to buy a house, laden with university debt, and so on. The conditions are ripe for a generation who wants radical social change, and maybe rejoining the EU will be part of that.