>I don't know why it is but people seem much more interested in the tech than in the value they can create.

Well, for some engineers who don't have much say in product development, the amount of value they can create is bounded by the business specification/deliverables they have to produce (and maybe equity or lack thereof plays a role here). However, if the architecture is considered their responsibility, then there's a lot of fun in using _shiny new toys_ even if it's overkill and will incur unnecessary technical debt. It's fun to overengineer things.

Not saying it's a good thing or even professional behaviour, but I understand it.