This implies that everyone else used logic to arrive at their points of view.

LOL, only if you have reading comprehension issues.

It explicitly STATES (not implies) that they ("not wealthy right wing populist voters") are a member of the set of those who arrived at the position emotionally. It makes zero statement about who else might be in that same set.

The good news however is that we have academic studies that have actually answered that question. In short the right is heavily supported by those who select emotionally, predominantly from an underlying fear basis. And that the left predominantly operates from an analytical basis. This is the source of the (very poignant) quote about "facts having a left wing bias"

To argue that your position is grounded in logic whilst the 'other' group is ground in emotion is an ego-inflating fantasy.

Yeah, well, facts are uncomfortable, I get that.

People most often make decisions based on emotional reasons and then use logic to post-hoc justify them.

Oh now, that is absolutely true. Academically well supported too. You know what the next sentence is going to be though, don't you ? It's the right, particularly the populist right, that heavily do so.

We are all closer to reform voters than we would like to believe.

Keep telling yourself that if it helps you sleep at night, meanwhile the polling shows that voting "anyone but reform" to keep reform out makes up about half of UK voters, and only 25% are willing to vote for them.

EDIT a couple of missing words and punctuation