I’m saying if the left in those countries wants to win votes they have to gain voters by offering them something. That’s what moves the Overton window, a party trying to appeal to a broad base.
We don’t have a system which encourages a left, right, and centre leading to coalition governments.
We have a FPTP system which encourages 2 major parties to try and form coalitions within themselves to win an absolute majority in government. With outsiders getting disenfranchised.
Which coalition will the young male voter join? The one offering them something.
In a FPTP system what you seem to identify as “the left” are not the left. They are outsiders, detached and not pulling the government one way or the other.
They are involuntarily neutral voters except when they vote for one of the major 2 parties.
I disagree with the disenfranchisement in the system. I identify it as an additional problem. But the core problem is a lack of appeal to that demographic.