1 download Meta.txt from GitLab (img. 1): https://gitlab.com/J4YC33/metablock/-/blob/main/Meta.txt
2 change the .txt behind the filename to .csv (meta.txt > meta.csv). You can probably do that simply by changing the file name.
3 for those on Mastodon, go to your Profile Settings and import the file (image 2). The order to click things is as follows:
Import and export > Import > Import type [important!] > Domain blocking list > Merge [important!].