So does Cowboy Bebop. So does NGE (revisions aside). School Days was under 26, as was Diebuster, as was Kemonozume, as was Haruhi, as was NHK, as was Now/Then, Here/There, as was Trigun; and even Trigun had a few episodes of almost pure schlock at the beginning.
FMA was good right up until it hit the early 30s; coincidentally a little after 26 episodes. Monster sort of lost its protagonist after its first 26. Bleach went astray as soon as it hit Soul Society. Naruto was never good, unfortunately, but I'm sure it hasn't gotten stronger as its gotten longer.
Face it, none of these ideas are that great. None of them are so good that they can withstand 300-400 episodes about them. Absolutely everything would be stronger if it were shorter, and 26 is the outer limit.
Infinite shonen is designed to hook you and get you to buy merchandise. They are not interested in strong storytelling, deep characters, compelling plots or any kind of integrity. They are bad, they are dishonest, and they are poisoning your souls.