It isn't obsolete. Webpack just reduces task runners even more, since webpack takes care of taking your source, copying your source to your build/dist/whatever directory, minifying everything, creating hashes in filenames, being able to update html with those hash names, etc.. Basically, if you can use `import` on a file in Webpack 2 or `require` in either Webpack 1/2 you don't need Gulp/Grunt to do that work.

I personally work on things that still need other aspects of the task runners.

I am sorry but if someone told me that the product which came out yesterday is obsolete then I'd understand that Javascript world is silly, but if at your company a product which was popular 3 years ago cool, then it's your company's fault.

Javascript was popular 3 years ago. What new, cool thing have you moved on to?