A buffoon like Farage is not just an idiot or a "true believer" in regards to the things they espouse, politicians like him are astroturfed plants, controlled opposition, funded by those who want to placate nationalist sentiments in European countries in order to prevent a truly grassroots nationalist movement from taking off or proper anti-immigration leadership from arising.
The biggest demographic threat is legal immigration. A disastrous outcome awaits White people if this continues.