"Happiness" can be defined in different ways, as Aristotelian flourishing or as moments of contentment. If someone's life is good without producing much satisfaction, I think the goodness in question might be more about honour or meaning than happiness.

I'm not big on the ideal of happiness, as I explain in the articles below:

https://medium.com/@benjamincain8/happiness-is-for-sheep-e97818cd06a0?source=friends_link&sk=0275af377dbda349117870cb7525b9de

https://medium.com/the-apeiron-blog/who-deserves-to-be-happy-a35d8141495e?source=friends_link&sk=e743cc365e04082d0540ecd2fccf84e0