D-Grade actor/producer Enzo Zelocchi possibly using paid bots to boost ratings of movies he produced and/or acted in

Someone mentioned this on reddit a few days back and upon further inspection, its obvious he is trying to manipulate the ratings of his movies either by paying off bots or some other means, examples are

https://www.imdb.com/title/tt4884540/ratings

https://www.imdb.com/title/tt1725047/ratings

https://www.imdb.com/title/tt1467058/ratings

https://www.imdb.com/title/tt4465156/ratings

https://www.imdb.com/title/tt3655326/ratings

https://www.imdb.com/title/tt3120430/ratings

https://www.imdb.com/title/tt1754730/ratings

https://www.imdb.com/title/tt1788979/ratings

I know IMDb's  'weighted average' prevents the system from accepting these 'vote stacking' but the system doesn't actually discard them either creating a false appearance for the title and to make matters worst, i seriously doubt any of these people doing this are ever taken to task (especially if the people doing it are registered IMDB resume/paying members)

Just pointing out one of the examples, not sure how many like these are on IMDb.. (1000's maybe)