This is true for every election with 2 parties.
Netherlands government is far from great, but it's nice that even a 10% party can matter
and more importantly, can grow and replace a larger party if those start being radical communist sympathizers.
Remember though, some presidents ago, the right was anti-free-speech, anti video games, anti, with overreaching anti terrorism acts.
Shitheads will be drawn to whereever they think they can easily get power, currently that is in left wing politics.
If the dems lose critically hard, the scum will look for something else to infiltrate and subvert.
Trump derangement syndrome is the result of brainwashing echo-chambers and bad information.
The left has become a cult of sorts, one of the main red-flags of cults is that the cult comes before any family if they disagree with the cult.
I think it is important not to not view your cousin as irredeemable, but pity him instead, he has a mental illness that is likely not even of his own making.
We are all on the internet enough to see how easy it is to believe what we see in some video, only to then have to see 10 videos claiming the opposite before we finally realize we we're messed with in the first one.
He could just be a piece of shit of course.
Summed up old: the intolerant towards different opinions. new: someone with strong wrong opinions. bonus points: if they have opinions on the wrong people.