It’s like MySpace and Facebook. The momentum can switch at any moment. Like others said, it’s better to fix some important issues before Lemmy becomes popular.
It’s very likely that Lemmy will be more popular because Lemmy is more open for innovations. This is not Linux where you have to learn something first. If the frontpage is better, people will switch. Reddit cannot rock the boat whereas on Lemmy, each instance can try a new feature and show its usefulness.