Videos proclaiming users are “Chinamaxxing,” or “in a very Chinese time of their lives”

This sounds like bullshit, of course we know people have clubs that are fans of country music or Star Trek or whatever cultural things people may find interesting.
But I never heard about USA maxxing, and I doubt there would be more reason to do that with China.
Some Chinese cultural elements may be fun, popular and interesting, but Chinamaxxing sounds more like a mental health issue than a cultural thing. And definitely not an element of soft power.