Bitcoin is dumb. That’s not meant to be a criticism or negative at all.
What it simply means is that Bitcoin is designed to do one simple thing, and that one simple thing is hold Bitcoin. OK that’s not strictly true. You can also transfer it to someone else. And you can also tweet about it (lots of people do that). But there’s not much beyond that and that’s fine. It does its job extremely well. Kind of like how people say that your broadband internet connection should be a “dumb pipe,” Bitcoin is a dumb coin — something robust that does its thing well and predictably.