Those voters who would shift to the Conservatives with age did so because they had accumulate assets that they would want to protect. Fewer and fewer people are getting the chance to accumulate such assets now, so there would be no reason for their politics to shift.
I agree the governance of the UK is in need of reform, and I would say voting reform would be the place to start.
From what I've read that was true until the X generation which reversed the tendency... Don't know how it will be with the Y and Z generations considering the masculinist movement is very popular with 20-35 y.o. white men...
I hate headlines like this purely because it makes a lot of people who were going to vote think "Meh, I don't really need to vote, Labour have it anyway" and then Labour don't have it.