I mean... the FBI and INTERPOL/EUROPOL routinely do things like infiltrate dark web black markets for physical things, services, hacked data, hacks themselves, that exist mainly or only on a .onion site, then honeypot the users for 6 to 12 months, then crackdown on as many as they can at the same time.

They also go after rom hosting sites, they go after the sites that host torrents and trackers...

Sure, call those 'Law Enforcement' agencies instead of 'Intelligence' agencies if you want to, fact of the matter is they often collaborate and share methods, practices and just direct intel.

Kinda like how US police have largely militarized after getting all the surplus guns from Iraq 2 and Afghanistan.

...

Have you never seen a website with a:

"THIS SITE HAS BEEN SEIZED AND SHUTDOWN"

Banner replacing the main site?

If not, you must not have been pirating anything for very long, or even just following that genre of news.

Happens all the time, and its often a big smorgasbord of collaborating LE/Intel agencies with their logos on the banner.