The older someone is the more likely they are to vote Tory.
The further into education someone goes the more likely they are to vote Labour.
Dress it up how you like, they are facts.
That is true. However the second point does not imply that more intelligent people vote Labour... indeed it's almost the same point as the first. This is why: In the 1950s, circa 3% of people had access to higher education. That had only risen to 10% by the 80s. These are your older, Tory-voters.
In the 90s, on the back of Blair's changes and student loans, that rose steeply to over 50% in 2020. These are the young Labour voters. They are not more intelligent than the older voters, they have just had more opportunities to study. Moreover, of that 50%, a large proportion are studying vocational courses - because the traditional academic subjects would be beyond them.
EDIT: On the first point. This age-voting intention curve has been the same for decades. It's the same people voting Labour in their 20s who later vote Tory.