Soon after, the team starts using this new shiny technology (or software architecture design paradigm), but instead of going faster (as promised) and building a better product they get into trouble. They slow down, get demotivated, have problems delivering next working version to production. Some teams even keep fixing bugs instead of delivering new features.
Hype Driven Development
Marek Kirejczyk
7K113

*Definitely* reminds me of this: