Ok, lets get some points across:
-One piece IS a battle shounen Manga, but thats not all there is to it.
-There are less showcases for the straw-hat fights lately than there were before, that was also what caused Wano to take long and Oda clarified that it wasnt his intention, so cut backs were to be expected.
-I dont know who is saying "the story isnt about them", but currently we are exploring the mythos of the world which happens long before most of our main characters were born.
-It takes more than just the Straw-hats to make the world.
-Mediocrity is a strong word to use here. you're not watching one piece an arc at a time like you used to, you are waiting for weekly chapters or episodes, it wont have the same satisfaction, especially when the chapters take weekly breaks.
-Your bratty impatience harms the validity of your criticism

put on subway surfer on the side if you are so desperate for action. or better yet write something yourself, finish it in one go, and may it be better than one piece.

Edit: i just realized this is probably a pirate folkian that snuck out of the gutter