Chasing a shiny stack is not a good idea. It might not be shiny for long, and it's not worth putting up with a shitty environment, team or management structure

Chasing a shiny stack is not a good idea. It might not be shiny for long, and it's not worth putting up with a shitty environment, team or management structure just to play with the latest hotness. You can do that in your own time anyway these days. But escaping a shitty stack may be a good idea. If you spend 7 years working in some retro cold fusion environment that will certainly look bad on the resume. If the stack is uninspiring but pragmatic (let's say Oracle + java) then other factors should rank higher.