Calling this a tamagotchi is silly. The only thing this and tamagotchis have in common is that they’re small electronic devices with a screen (and even that tech is different).

When you compare a project to something that it isn’t, you’re doing it a disservice. The people who are intrigued by the tamagotchi angle are disappointed, while the people who are uninterested in it (but might still like the project) won’t even give it a change. Everybody loses.

It's marketing. Attach yourself to some wildly more popular brand for no reason other than to boost your own popularity. Like JavaScript did with Java.