We should not make it more than $1000 per month. Very few would choose to be poor. It would put a lot of pressure on companies to pay decent wages, though.
$1000/month is $12,000/year. Thats far far below poverty levels. It needs to be enough that people can choose to supplement in order to engage with luxury consumption. If people are forced to supplement to just survive, then we need to maintain the minimum wage and a whole host of other weird baggage.
The 2024 FPL figure is $15060 + 5380 per additional person family member past the first. $12k/head/year comes up a bit short for an individual, but it's not that far off—expenses involved in holding down a job probably actually account for the difference anyway.
It also becomes clearly tenable with households of more than 1. Supporting a family of 2-3 on $24k-36k is like, yep, I've met married international grad students. Of course they'll spring for supplemental income where available, but as a baseline it is tenuously "enough".
The goal can't be to solve every desperation case. But if the program wouldn't allow individuals living in dangerous and exploitative situations to confidently leave them (financially) Id argue the program was a failure