From reading so many events, I can tell you it is. And even those you claim to have been barnstoriming right out the gates often have buildup's sometimes over a year prior to the first issue... Infinite Crisis for instance was one of them.
You are mistaken it for Crisis on Infinite Earths, the first one, the one it was both trying to redo and undo. Thats the one no one save a tiny handful of people remembers clearly. And yes I will say IC had very little impact, because the immediate aftermath was completely skipped over when every book jumped a year ahead in time, and the big change Infinite Crises gave DC... a reborn multiverse, was hardly ever used by anyone.