I leave only one clap under articles not because I don't like the article, but because to me a clap is synonym of a like. If an article really profoundly touched me, which is pretty rare, I'll leave more than one clap, but otherwise if I just like it moderately or normally then I'll leave only one clap. Think of it as the difference between a like and a heart on Facebook. I do think it's better to leave a clap that announces that I like it the piece, so the author knows that somebody liked what they do, that's definitely a form of engagement hence why I'm definitely not leaving this platform as you jokingly suggested.