MissingInteger

https://www.tagesspiegel.de/berlin/nach-beteiligung-an-palastina-protesten-in-berlin-drei-eu-burgern-und-einem-studenten-aus-den-usa-droht-ausweisung-13468543.html

“As a trans person, the idea of going back to the U.S. right now feels really scary.”

Right, "safe country".

Both btdig and nyaa.si are online and fully operational, that seems to be a proplem on your end.
Skullxdcc background image does not irritate me because the background of the search results is black and not transparent.
Here is a more robust filter to block the background image:

skullxdcc.com##.fake-body { background-image: none !important; }

Interesting collection.
Some notes:

• There are two nyaa proxies pages listed. nyaa.si is the actual "official" one. There has been malware in the past on nyaa proxies.
• sunxdcc is being fazed out. The same developer made a new search engine skullxdcc.com
• btdig.com is another highly capable dht crawler that could be added to the "Torrent Site" section.
• Kickass torrents is long, long dead the remaining sites are sketchy copy cats.
• kinozal requires sign-up; would probably good to note in the right hand column.
• irc.undernet.org/bookz and irc.irchighway.net/ebooks are XDCC servers for ebooks
• I don't know if this would fit the DDL sites category, but some phenomenal ebook sites are: annas-archive.org, libgen.is, libgen.li and z-library.sk

It's also an odd choice to put the predbs at the top, since that's probably the category that people are least interested in, in my estimation.

The fmhy.net website is far better to navigate.
For Asian content maybe checkout the non-english section.

This one is open source.
Adguard is an massive contributor in the adblock scene.
Many of their products are free (Adguard Home, DNS, etc.). Even this one has a free version. They want to make money as a company and on iOS you gotta pay the Apple tax.

But you can install Adblock extensions (but only in Safari)!
The best by far is Adguard.

Do you use the paid version of Adguard?
For me on iOS it's almost as good as uBO on Firefox.
No blank spaces where ads go, support for every filterlist I want, especially nice for blocking cookie notices.

yt-dlp (the most up-to-date version of youtube-dl) has hundreds of supported websites. The generic downloader can download from unsupported websites most of the time and if that doesn't work you just paste in the m3u8 file as seen in my answer.

That sometimes works, but you might need to add some arguments like here --add-header "Referer: https://vidmoly.to/"

Yeah, just stumbled across that.
Video DownloadHelper a blast from the past. Haven't used that for more than a decade (I discovered youtube-dl and never looked back). I didn't look further in my testing, only promted me for a license when a wanted to download only audio, which seemed kinda scummy since there isn't even a pure audio source on the website as far as I can tell.

According to the waterfox documentation you should just be able to install the extension from addons.mozilla.

If you want to use this addon on this website you still need the CoApp installed separately.