>>42313238 (OP)Celestia is such a prime example of the Worf Effect trope they should genuinely rename it to the 'Celestia Effect'
From S2 finale onwards, the moment Chrysalis defeated Celestia, THAT became the bar to clear to establish any threat as being a real concern. The problem is, after you beat Celestia once, the ONLY way any future threat truly establishes itself and isn't subject to 'well at least this isn't as bad as the Wedding', the only way to keep threats growing is to have Celestia lose again, and again, and again or else nothing feels like it's genuinely threatening. Celestia stopped being the ultimate guardian of Equestria, a goddess who flawlessly protected her people for 1000 years, and suddenly became the lowest bar to clear on the Equestria Doomsday Clock
