Is the project «happiness can be trained» given up by scientists which are publicly funded & is now mainly interesting for business scientists?

20 years ago Matthieu Ricard, Buddhist monk with a PhD. in Cellular Genetics sold us the slogan «happiness can be trained» on YouTube: He reviewed this PNAS paper from 2004: https://www.pnas.org/doi/10.1073/pnas.0407401101 But what happened after these revolutionary findings from the year 2004? What happened was «Altered Traits» in the year 2017» But is Altered Traits …