I am just going to have to lol at you here. You do realize that two of the three youtubers singled out here, LevelCap and JackFrags, have been playing the Battlefield series since Battlefield 2 or possibly even its first game, 1942. These are not people who hopped onto the BF4 bandwagon to the call of dollar signs. Their channels date back to BF3 days and include some footage shot before in Bad Company 2. The assertion that they turned their channel in BF4's direction for money tells me that you haven't done anything more than read the click bait headlines associated with this witch hunt.
These people put out videos every single day of the week and if you bothered to actually research the subject or, I dunno, actually watch the response to hear the accused's own words you'll see that he was paid for three videos, the maximum allowed under Ronku. One was raw footage shot at a preview event he was invited to and was nothing but gameplay with no commentary added in, and was not originally intended as a Ronku-eligible video, posted before videos were considered for submission. He asked if it could be added and it was granted. The second video was a levolution guide video covering, surprise surprise, one of the most hyped up parts of the game going in. Practically every youtuber and media website, regardless of being paid by EA or not, did one of these because it is material that not every player will realize is there or doable. Jack decided to be add a comedy take to it by roleplaying a British television character along with a friend. The third video was more raw gameplay footage with voice comms included, dubbed with music on top. No commentary or opinions.
So let me by clear, for those who refuse to even consider the responses by the youtubers accused of this crap: Ronku only covered three videos per youtuber. They did not in any way, shape, or form purchase these guy's souls forever more to only say nice and fluffy things about Battlefield 4, DICE, EA, Santa Clause, Scientology, or whatever else. They created these videos because that is what they do, they create content about a game series they like and post it for the world to see.
That these videos also met the criteria for a special advertising campaign created by EA and allowed them to be paid a little extra was simply a nice bonus. Jack acknowledges that he may have (my words) fucked up by not disclosing that fact and will now do so in any similarly compensated videos in the future but it was such a minor thing that only covered such a small fraction of his content output and on stuff that on its own two legs was in no way sinister. In my opinion these guys are being singled out by people making a gigantic stink about something that is barely a fart, a number of whom are making wild accusations without a single shred of evidence. Why? I'm sure it is for a variety of reasons, but the biggest in my mind is that it is "cool" on the internet to hate EA, that they are dirty and anything their money touches is dirty. Hate EA if you want for the actual dastardly shit they have done, don't start leaping on faux controversies to justify yourself.
Then maybe people should stop acting as if these guys are patron saints of gaming who robbed the collection plate and betrayed the noble profession of games journalism. They are as you said, youtubers who play shooters and offer tips. People should stop pretending otherwise.