If anyone has linux or WSL they can do this in one line.

It does not download poneb.in/u/ links (bottom of page)
https://poneb.in/u/PonyPlotWorship

curl -O `curl https://ponepaste.org/6509 | grep -o --extended-regexp -Z "((ponepaste.org\/)[0-9]{1,14})" | awk '!seen[$0]++' | cut -c 15-30 | sed 's|^|https://ponepaste.org/download/|' | sed -z "s/\n/ /g"`

curl -O `curl https://ponepaste.org/6509 | grep -o --extended-regexp -Z "((poneb.in\/)[A-z0-9]{1,14})" | awk '!seen[$0]++' | cut -c 10-30 | sed 's|^|https://poneb.in/raw/|' | sed -z "s/\n/ /g"`

First line is for ponepaste links second is for poneb.in links.

What these commands do:
curl -O: download one file per url
`: everything in the ` will become a long list of urls (and is executed first before the curl at the start)
curl https://ponepaste.org/6509: download the main archive page (this should actually be the /download/ page but the main page works)
grep: find ponepaste.org lings with a 1-14 digit number (0-9)
awk: remove duplicate urls
cut: select just the id part of the line
sed: add the download url
sed again: replace the new line with a space " " for the opening curl command

Each | character is its own command, you can start with the curl https://ponepaste.org/6509 and add on the next | portion of the command and see how it works.

eg first
curl https://ponepaste.org/6509
second
curl https://ponepaste.org/6509 | grep -o --extended-regexp -Z "((ponepaste.org\/)[0-9]{1,14})"
third
curl https://ponepaste.org/6509 | grep -o --extended-regexp -Z "((ponepaste.org\/)[0-9]{1,14})" | awk '!seen[$0]++'