The idea is that the "one last thing" is supposed to be something super hype to finish the show with a bang, so when this underwhelms it comes off as especially disappointing; same thing happened with say the Bethesda ports ending the recent partner direct, Octopath Traveller 0/Adventures of Elliot at last year's partner direct, etc.
It's basically a failure to "read the room" and comes off as being out of touch with what your audience wants.
As far as it being a bad omen, I guess it's more that game development is already such a minefield that more games than ever are turning out less than stellar.








