The threat model you sound concerned about could easily be mitigated in several ways. Use a proxy/VPN/TOR to visit the site, don't sign up for the email list. Maybe use a spare email address? I'd assume the email list is just alerts for new documentaries. News letters and email sign ups are extremely common?

Why does this site look like a honey pot?

Paradoxical intentions? Can you clarify what by visiting a website, you'd have "so much to lose"? That seems excessively paranoid.

I'm not involved with thoughtmaybe.com - if there were any other website hosting Adam Curtis films, please feel free to share.