Again, you show your re ation when discussing baseball. Baseball is considerably more mental than "flowing team" sports like soccer, basketball, etc. I've been over this with you countless times, and you'll never get it. Great swing mechanics are MUCH harder to develop than anything you'll do in those other sports. "Uh, but floptrot players use their feet and developing a jump shot is real, real hard." Sure, but you aren't punished anywhere near as severely for your mistakes in those sports. Lebron can miss 10 jumpers in a row and still have a good game because he gets so many offensive attempts. A soccer player can turn over the ball many times and more than often than not (since soccer is broken), it'll lead to nothing as we watch yet another 1-1 tie unfold.
You get 4 or 5 chances on offense in baseball and if you don't make something happen, that's it. No "second half" comeback after going 2-15. Even Jordan is quoted as saying, "Baseball is much harder mentally than basketball." And he's right. It's much easier for a talented player to impose his athletic will in basketball, soccer, or football. You can't "out athlete" a great pitcher. You need world class discipline, spatial recognition (to recognize the strike zone which doesn't have a physical representation), and deep knowledge of that specific pitching opponent to hit MLB pitching.
It's not uncommon for the best of the best players in the MLB to go a month without so much as an extra base hit. If we equate that to an NBA player scoring 20 points, how often does Lebron fail to score 20 points? And this ease of imposing your will in basketball is evidenced by just how consistent the star players are game to game and how many times top 5 players wind up in the Finals. And it makes the sport uninteresting.
I'll also add that sports where you have downtime to think about your execution are MUCH more mentally taxing than sports where you do most actions while in "the flow." Golf, baseball, and billiards (@DMC knows about that last one) are the sports I played in that mold growing up and they are much more mentally taxing than basketball and football, due to the fact you have downtime before every action where you can feel the pressure mount. Only the QB and kickers in football is faced with that and only when you shoot freethrows do you face that in basketball, which is why I always find it funny when people say a basketball player "choked" on a lay up. You don't have time to think enough to choke.
As for "complexity." Sure, team oriented goal sports will be more tactically complex by virtue of their design, whereas baseball is a hybrid team/individual sport, but I'll say that on an individual level, baseball requires more learning on the part of the player than basketball and football, which are coaching oriented games built around specialist positions. YOU have to figure it out at the plate. A coach can't call a play for you that frees you up, nor can you "hand off the offense" to another player if you don't like your matchup or situation, like scrub players deferring to Lebron or a QB taking over the offense.
You'll never "get it," and that's fine. But your arguments remain re ed and ignorant to this day, and you'll handwave away any evidence that contradicts you (e.g. evidence of how demanding baseball is: It's the sport with the highest washout of first round draft picks BY FAR. It's not a sport that a uber-athlete can take up senior year in high school and play at a high level, like all the NFL and NBA players who took up the sport late and made it. Or cases like Jerryd Hayne who made the NFL after 2 months or whatever despite never playing the sport).