Can't verify whether this guy is full of crap or not but it is an interesting watch regardless.
TLDW summary: It is unlikely that MLB is deliberately screwing with the baseball. It is very likely that the balls being used have components sourced from different suppliers so that when made into a baseball, there are small variations which results in major changes in outcome. We also know why Aaron Sanchez kept getting blisters in 2017. The seams were made using thicker lace.