Why is he so against feeding the poor?

I have to credit a random Redditor from 10 years back or so that had some excellent analysis I haven't seen elsewhere or since. This Redditor's thesis was that the GOP have two core concepts:

1. Society is zero-sum. For someone to gain something, someone else must lose something.
2. Each person has a certain class level in society and that each person should stay in their class. If you are poor, you should stay poor. If you are rich you should stay rich. Attempting to move up into a higher level class should be restricted by any means of government possible.

Looking at these two together explain nearly every GOP initiative or position. So lets apply it to your question:

Why is he so against feeding the poor?

Applying the first concept: For the poor to be fed (gain), those that are not poor have to pay (loss). The GOP in power are largely rich, so they see the poor being able to eat through SNAP as a personal loss to the GOP.

Applying the second concept: SNAP may allow someone to spend what little other non-SNAP money they have on things that would advance them into a higher social class such as:

• more education to be able to earn more for higher skilled work
• more efficient transportation allowing them to access higher paying jobs either farther away or at more available hours
• specialized tools that could be used to earn higher income

So the GOP don't want the poor to be fed because they believe the poor should be poor and stuck there forever.

I have to credit a random Redditor from 10 years back or so that had some excellent analysis I haven't seen elsewhere or since. This Redditor's thesis was that the GOP have two core concepts:

1. Society is zero-sum. For someone to gain something, someone else must lose something.
2. Each person has a certain class level in society and that each person should stay in their class. If you are poor, you should stay poor. If you are rich you should stay rich. Attempting to move up into a higher level class should be restricted by any means of government possible.

Looking at these two together explain nearly every GOP initiative or position. So lets apply it to your question:

Why is he so against feeding the poor?

Applying the first concept: For the poor to be fed (gain), those that are not poor have to pay (loss). The GOP in power are largely rich, so they see the poor being able to eat through SNAP as a personal loss to the GOP.

Applying the second concept: SNAP may allow someone to spend what little other non-SNAP money they have on things that would advance them into a higher social class such as:

• more education to be able to earn more for higher skilled work
• more efficient transportation allowing them to access higher paying jobs either farther away or at more available hours
• specialized tools that could be used to earn higher income

So the GOP don't want the poor to be fed because they believe the poor should be poor and stuck there forever.

The "logic" that anyone on SNAP is capable of paying their way up the "ladder" is complete horseshit. (though I know you phrased it as what the 1% believe, not reality in any way) Also, there is no ladder.

So what you’re saying is they’re sociopathic monsters?

I can’t even tell if I’m being sarcastic. One question: what did they say about the poor also seemingly voting to remain poor?

That conversation didn't go that way, but I think the answer to why the poor voting would vote for the GOP is addressed by the (possibly misattribution) Ronald Write quote:

“John Steinbeck once said that socialism never took root in America because the poor see themselves not as an exploited proletariat but as temporarily embarrassed millionaires.”
― Ronald Wright, A Short History of Progress

Identity politics also plays into it. Pass the blame on to another demographic and promise to do something about it.

The “logic” that anyone on SNAP is capable of paying their way up the “ladder” is complete horseshit.

By his own admission, the mother of JD Vance (VP) was on that era's equivalent of SNAP (Food Stamps). Her son became a US Senator and now sitting VP.

"He explained, “I was raised in a working-class family. My mother required food assistance for periods of her life. My grandmother required Social Security help to raise me. And she raised me in part because my own mother struggled with addiction for a big chunk of my early life. I went to college on the GI Bill after I enlisted in the Marine Corps and served in Iraq.”"

source

The key word here is "paying". Nothing you provided in reply qualifies for that term. He's simply jumped from hand-out to hand-out and clearly has been looking for a way sneak out onto the upper crust the whole time.