I have to confess that I tried to do the same thing. I was not thinking about evidence, but only about making these crisis actors responsible for their complicity in these psyops. IMDB required that I use an actual movie name, and at that point I lost interest.
Your point about maintaining clean data is a good one, and I wouldn't try this again. However, I'm sure the guy who edited the IMDB entry was motivated as I was, by an urge to expose a fraud.