Most of the data has been preserved via the Pushshift data dump/archive. It seems to end at February 2023, and the entire archive (including the separate 2023-01 and 2023-02 archives) is >2TB with zstd compression so it's not exactly easy to search unless you have a few terabytes to spare. Luckily, much of the data still seems to exist.

https://academictorrents.com/browse.php?search=pushshift

https://the-eye.eu/redarcs/

That worked for me too, it's just not as seamless as I expected

https://reddark.untone.uk :3

:3