[whstl]

With HTTP/2 multiplexing the latency of fetching multiple files from the same server is not a big issue anymore: https://stackoverflow.com/a/30864259.

One can also argue that Minification is also not really that important with widespread new compression algorithms like Brotli.

EDIT: Also, see this very good argument in favor of multiple files: https://news.ycombinator.com/item?id=34997759