>>35608109I distinctly remember them addressing this in an interview. Basically, they found that people would read them less & less with each new game, because they've always said the same thing since the original Red & Blue. To remedy this, they streamlined all of the trainer tips into tutorial sections.
Now I know what you're thinking... "But if players didn't need them, why FORCE them? Players not reading the optional tutorials if they don't need them sounds like everything working as intended..." Ah, well there's an answer for that too. See, Gamefreak are just a bunch of one-hit-wonder hacks who know nothing about quality game development.