Not axed, this is pretty much the WN and LN ending, the manga is a complete adaptation, the ending was this fucking bad the WN translator made a fanfic ending (155 in Novelupdates is a fanfic, 154 is the epilogue, LN had nothing else)
Though technically chapter 78 is the actual "ending" here and chapter 79 is an extra chapter for the manga which should be 78.5 instead
Author did pretty much the same with a different work, Humans are the Strongest Race, got to the point where it just rushed a last arc for the sake of ending and be done with it, which got a complete adaptation too, and then there is Skill Taker that have lasted longer despite the WN starting around the same time as the other 2
Will be a miracle if Skill Taker actually have a "good" ending, same goes for Magician of the Inferior Eyes, or any other of the author current works