What does it mean to be "busy recently, cute and grown up"?

This sentence must be a popular expression on the Internet recently. Many people will post such a sentence in the circle of friends, but many people can't figure out what it means.

Next, let me give you an analysis. The first reaction that many people see is that you have grown up. You are really busy, trying to grow up, become more mature and successful. For example, my roommate sent such a circle of friends, and the voice his parents sent him on WeChat was actually, don't be too busy, relax yourself properly. Take care of yourself, this is what you see on the surface.

However, have you ever thought that many people refuse you to go out to play, go out to see movies, go out to Internet cafes, and so on? What do you think is the reason? These reasons are that you have to do your homework, you have to study and you have to do other things. Together, these reasons mean that you are busy and have no time to accompany you. But with the development of society, like our generation, if someone invites you, you can just say "I'm too busy to refuse". Can we still feel perfunctory? This sentence used to be used to politely refuse other people's invitations, but now it seems that it is not enough. And you see, after I've been busy recently, do I euphemistically add busy being cute and busy growing up, so that people I see don't feel so perfunctory? Sometimes I feel a little playful.

So, personally, I think what this sentence means is that I politely refused your invitation and have no time to play with you. I want to do my own thing, not make myself more mature and successful. So next time you see someone say that, you'll know what it means.