Thank you!! The actual answer is a bit of both; I started off copy-pasting and after a few thousand, I made a way to convert them but I did this in 2022 and over the past couple of years I've heard people saying they're going to make a better version this - I haven't seen any of these programs but they may be out there if you look! My version works with Excel and LibreCalc, results with other macro-friendly spreadsheet programs may vary.

It'll work for any twitter thread long as you can get the archive of the user data! You may want to edit the HTML output to fit your needs, I believe the one I uploaded is a very stripped down version so people can just edit it as they like.