This site (and all other torrent sites) is limited to what the users have access to (usually paid access).
When you get a Carnal+ video here (or on any other sharing site), it's because someone, somewhere had a paid subscription and then downloaded and shared it.
Production companies sometimes embed data into the downloaded video stream that identifies the account downloading the file... if it shows up on the share sites, they suspend your account (with no refund!)...
Additionally, THIS site in particular, is searchable via the web-crawlers (that index the Internet for sites like Google) - thus, a decent programmer can look for Carnal+ videos popping up here and auto-send a DMCA notice.
Yes, they're making it harder to pirate their content - do you blame them?
Often, for one studio (or site) or another, there will be one or two users that help us (leechers) keep current - but if/when that one uploader goes dark (vacation? just tired? arrested? dead?) it can be a long time before someone else "steps up"
I've been on this site for nearly 20 years now - and some of my favorite studios have gone thru "dark times" and then someone new comes along and fills in the gaps.
You could also be that person: you pay for the content, and then share it here! (NOTE: If you do choose that, I recommend - from a friend of mine who DOES do that for a studio - that you ALWAYS re-code the downloaded content from a studio site. He uses HandBrake on Windows...)