The problem here is the equivalence between weight lifting and crossfit. Within weightlifting and powerlifting circles crossfit is perceived as an abomination and something that should be killed. The main issue here is the culture surrounding the crossfit movement, which is what you've already observed. Note that I've said nothing about crossfit as an idea in and itself.
And to the point about weightlifting being a form of meditation - it absolutely is.
Just as a thought exercise - think of a some restriction you have had. Be it going to bed early, getting up early, drinking less, eating less, doing something, etc. That's the temptation with breaking form - it's usually super easy to break your form and that's the thing you have to mindfully control. Repeating cues and having that mind-body connection. That really trains your focus.
Then you have the burden of lifting the weight when you can no longer see or think. Every set, every rep you have to do something incredibly pointless - it has no immediate effects, no one is forcing you and the only reason is because you want to. But that thing is incredibly hard and the alternative is just not doing it. I'm sure you've been faced with a tough decision or choice that you must make and you wanted to just not make it. At a point lifting is choosing to face that decision over and over and over again - it's not just a physical exercise it becomes a huge mental exercise as well.
Everyone has that story when you didn't see what weight you put on the bar and you just made a 10% PR when you've been struggling with the previous weight for months.
Usually when being at your maximum when performing an exercise(squat, deadlift, sprinting, etc.) all extraneous thoughts disappear, you focus is on the movement, your thoughts become a tad slower, and your will is tested all the time. There's a very similar sensation when meditating and I've felt that also when focusing on a problem or riding a bike. Also the shouting and getting angry is a mix of getting your body ready and focusing at the task at hand - a bit similar to the chants or music during meditation(not really a fan of that tbh but some people swear by it - ambiguous on purpose). Sometimes when warming up or just during submaximal sets, thoughts just come and go and you are definitely there doing the work and thinking them and yet you're on the sidelines calm, relaxed and observing yourself and your mind.
It's a bit weird and I maybe gave a crappy description but that's my experience with lifting and meditation.