Harris lost to Trump in 2024 for what I see as exactly the same reasons.
"Careless People" talks about it and how it was the inception of Meta's powerplay into politics by becoming indispensable for politicians to use their platforms to reach voters. The only thing they cared about is engagement and avoiding regulations, both are easily achievable if polarisation becomes the norm, the obliteration of proper political discourse into the form it exists now is a consequence of that.
I don't believe those far-right parties would have this much support if public discourse wasn't mostly focused on online platforms like Instagram, TikTok, Twitter/X, etc., they wouldn't have the reach nor the tools for creating information bubbles as existing right now. Those platforms allow for the formation of entire separate realities that are self-reinforcing.
Hence why I started with "fanning the flames". It means the issues are there, they need to be worked on but with social media we are stuck, solving complex issues require compromises, long-term thinking and planning, nothing that is enabled by social media's knee-jerk reactions, ephemeral messaging, etc.
Sadly, some of the parties that are involved (tech bros, Russia, etc.) are not going to do any good when it comes to these issues. They'll only make the housing issues worse (by accumulating even more wealth and invading your country, respectively). But blaming everything on immigrants and elites has always worked extremely well, in-group vs. out-group is something that our brain needed for survival in the past, so it is very easy to trigger.
The saddest part is that those that push the anti-elite narrative (Trump, Musk, etc.) are often the elites themselves.
That doesn’t imply that the candidate must have morally dubious character, just that morally dubious characters are taking advantage of it.