Firstly, I must echo DY’s sentiments on this matter. That’s just my natural reaction, towards this specifically and the idea in general. And that’s without even considering any Christian angle.
But as a primary point, the main reason I personally avoid these, despite a natural sense of curiosity one feels when faced with the prospect of seeing parts of Tanach bought to life with CGI and hundreds of millions of dollars, is because when I sit in shul, listening to leining, I don’t what the face of some actor in my head.
And that’s beside the fact that, especially with the big Hollywood adaptations, what’s on display doesn’t even bear a tangential connection to reality. This may not be the case with some of the older films, such as ‘The Ten Commandments’, but I wouldn’t know, having never actually seen any of them, see above.