Nothing is permanent because change is inevitable, except when it comes to liberalism and libertarians.
You used the black population to assert that demographics did not matter and I pointed out the fallacy of your assertion by saying that black is not a demographic culture is the demographic which you ignored.
If you think the demographic of white Christians of 1940 will reappear with a Spanish population you are just plain nuts.
No YOU used black people to disprove me, but in the process you pointed out that their core beliefs and political allegiance has changed drastically over the years. Which proved my point. Demographics don’t matter in long term politics because demographics change like that all the time.
Don’t need some old view to reappear. What matters is that whatever political allegiance the Spanish population has now will change. Over and over and over.