This might also applies to code. I have always think that I write simple, readable code but I wonder how much of that is just familiarity to my code style. I typically don't have problem understanding code that I wrote months a go though

That’s a great paraphrase of a sentiment that I have also tried communicating to people. I have tried convincing people that just because something is lesser used doesn’t mean that it isn’t more simple.

In general, people are afraid of simplicity. When you show them a technique or programming language or method or perspective or whatever that is new to them but also simplified the problem, people are inherently bothered that it isn’t as complex as they’re used to, which convinces them that it isn’t a valid solution.