If you see that (marines "playing" with Yautja via disarms), its LRP (unless its some wrestling match that was RP'ed) and has nothing to do with pred as a role. Yeah, benos are bigger, but benos are CONFIRMED threat, while nobody knows anything about Preds. Benos are also immediately hostile. Its not so far fetched that marines wouldn't shoot on sight another humanoid, since they know that such creatures (Arcturians) exist and are not inheritly hostile for no reason. Especially with preds that in CM universe aren't just straight up hostile. If Pred doesn't act hostile and just chats, or does whatever that isn't harming any other human, then fuck this Mutated Freak, don't piss him off.
I don't see how it ruins the experience, or immersion. Big humanoid alien with advanced tech, but not really hostile, acting more like a kid with magnifying glass among ants. Marines are those ants and if ants were smart enough, they wouldn't start a fight with that kid just because.
Maybe in first and second "solo" movie they act like B-movie slasher villan, but that changed. From Predators trough AvP movie to AvP game. In those entries, they are no longer Space Jasons Friday 13th style. AvP movie and Game its clearly stated that they "worked" with humanity, be it Master-Slave, or God-Peasant relationship, but still. This all changes preds from mushy villan, to actual "smart" alien race.
I don't see Predators concept as "Evil to the core" type. Its more like exactly like the example I gave earlier. Preds are like kids with magnifying glass and Marines are like ants. It isn't Cat-Mouse thing.
I don't see them as memes either. If you are "worthy", then they can hunt you for no reason, so why "meme" is there the only thing left? I don't get it.