I've worked in gamedeve since 2007 and interviewed a lot of people. Small games portfolio doesn't matter, because small games, just like beginner tutorials from Unity, don't teach you skills necessary to work on a large-scale project with multiple developers. When you're working on small-scale projects, you can follow bad practices and don't hit their limitations.

However, if I would be interviewing a game designer and not an engineer, this portfolio would have been incredibly relevant.