Hanzou
Grandmaster
And you say I'm the one that's biased lol.
Is there something specific in that statement you disagree with?
And I'm the one who doesn't train with BJJ folks? A couple of BJJ guys that I know who do sports BJJ told me this. "We do BJJ, but we don't deal with punches when we compete."
Yet the core of Bjj is positional dominance, so while there is no striking in competition, the ability to dominate a position translates just fine into an MMA environment. It's relatively easy to adjust to striking situations in training.
This is the same thing that every other martial arts system goes through. Same thing I've been I've been saying for the longest. "Not everyone takes a martial arts to learn to fight."
Below is the same path that all martial arts take. BJJ is no exception. When people stop training to fight, then it becomes something else. If they didn't say the words BJJ, you would think they were talking about kung fu or something.
Again, the core of BJJ is positional dominance and getting out of inferior positions. That doesn't change whether you're doing sport or doing self defense BJJ. So while a sportive Bjjer will have to alter their game to adjust to the realities of striking, the transition isn't a huge one because they still have the "keys to the castle" so to speak. Like I said, this is where MMA's closeness with Bjj comes into play, because practitioners KNOW the difference between the two, and KNOW that they need to make an adjustment for a given situation. That realization stems from Bjj's history as art that started modern MMA.
Further, please note that several videos you posted are from folks with an agenda. As someone who comes largely from Relson Gracie's lineage of Bjj, I'm all too familiar with self defense BJJ folks looking to downplay sport BJJ folks.
In short. Your idea of Sports BJJ keeps MMA in check is totally wrong. Below is sports BJJ. Notice the score card. Notice there is no striking like there is in MMA.
Notice that we have multiple elite Bjj sport competitors who have entered MMA over the last few years and done very well.