Haha. It wasn't a criticism. The secret experiment is very clickbaity because it doesn't say what the experiment was in the title. Readers have to click to find out. That's practically the definition of clickbait.
The fact that it's also 'secret' is, of course, also very clickbaity, but it's within the Medium rules and people do it because it works.
I should do it more, but holding back on what the article is about doesn't come naturally to me.
People who say clickbait isn't allowed on the platform haven't read the rules. It's less likely to be distributed. That is all.