Comment by Falkon1313

For new greenfield projects, ok. Sure if you're at an agency cranking out brand new projects for a new customer every few months, you probably should be using stuff that's fairly up-to-date (but tried and mature, not bleeding edge).

However, if you're maintaining and developing a product that has been successfully growing its customer base for over a decade, then you don't want to be just spinning your wheels rewriting it over and over in the latest hot new fad. That wastes time and money, adds bugs, and annoys the customers.

Integrate new tech as you can, along the way to providing new value or getting new customers, but don't throw the baby out with the bathwater. It's perfectly fine to still have 'older/unfashionable' tech in the system that's still providing value and helping the sales team to close deals.