You guys remember the mini gun carried a "purpose" for the movie, it was used in a specific scene to create a scenario that really turned the tide (ultimately created more build) in the movie for the audience and the team, that what they were dealing with wasn't normal.
It seems at this point "humor" is an opinion based on over-analytical pickiness towards meaningless aspects of film.
Good news is Black as confirmed in "Collider" that the humor won't be too much as it's not meant to be a "comedy" of any sort:
“I think the reason there’s a lasting quality that the original movie has that’s due I think, in part to the fact that it was made before it was so easy to just do a bunch of CGI effects and before video games had taken hold as well. So, there was a more visceral kind of war movie thriller-esque quality to the material.
It [The Predator] is ultimately gonna be a thriller. It’s not gonna be a comedy. It’s an R-rated movie and it’s supposed to be a kind of harrowing experience. I think it goes to what Fred and I are very familiar with, which is, if you told me to write a comedy I’d be helpless, but if you say write a thriller and put some jokes in it, then fine. Then, I don’t have to worry… it’s that sort of combination and tone shuffling that becomes at once the juggling act and also the challenge, but the joy too of what we’re trying to do.”