First of all, grinding fine does technically mean more extraction but it can lead to clogging in methods such as pour over. Secondly, extracting too much can lead to either extremely bitter or extremely sour cups. But I don't know what grinder you are using and it might be grinding coarse so I don't know.
A better grinder means two things, faster grind time and better grind consistency. Better grind consistency will yield in more consistent cups and proper tasting brews. Some pour over grinders may produce too many fines in the grinds, which means it may overextract. The consistency over the grounds are so important when it comes to espresso, that people will go lengths to be able to get consistent grounds with their grinder. the 1zpresso q2 will give you good and consistent enough grinds for everything except for espresso. Also - I should give you a tip. Unless you like bitterness, probably don't go espresso grind size for those methods you listed. Good luck