I clicked because I thought it's about Laravel's Lumen - turned out it wasn't, that immediately made me CTRL + W. IMO, bad name choice at this stage :/
Separate worlds.. I'd never heard about Laravel's Lumen until the two comments here. I had seen that they had Mix and Elixir which seemed unfortunate. Lots of weird naming overlap going on specifically between these apparently.
Why? Just because Laravel came first and made an abandomware project?
What makes it "abandomware"? It has commits as of 19 days ago and a release three months ago. Pretty sure Otwell continues to update and is a stripped down version of a very active framework.
Abandonware? It's still actively supported/updated with each major Laravel release. We use it in our shop for some quick microservices.
Laravel Elixir is the abandonware. It was introduced in 5.0 then unceremoniously dropped in 5.4 being replaced by Laravel Mix.