I mean, you're not wrong - it's not that hard - but it's also amazing how many people in our profession aren't particularly good at doing more than make small modifications in some giant monorepo at work.
And like, if you don't have the drive or desire to outside of work, that's fine! Maybe you've got other hobbies, or a family, or as much interest in practicing your work at home as an average dentist. So the lack of a Github repo full of fun side projects shouldn't be a negative signal. But I also know that I've worked with people in the past that I don't think actually could make A Thing from scratch without someone holding their hands the whole time.