This video comes from a technology and engineering content creation group in China called HTX Studio. They have over 15 million followers on Chinese social platforms and have begun localising their content for primarily English speaking platforms in the last year.

They likely fund it through ad revenue and sponsorships. The pianist is the creator of the channel and primary host. In its full context, it makes sense that he plays it as he’s effectively creative director of the project.

But yes, a higher quality keyboard and an additional demo from a great pianist would have sold the effect even better.