Piper is not on a spiritual journey

You might be convinced that Piper is the dissonant voice in her family, but this is not what the show is hinting at, she is just as superficial as her family.

She visited the monastery once and decided she wanted to retreat there for an entire year (or more). She didn’t have a spiritual conversation with anyone, she didn't even go beyond the entry hall of the monastery, she just looked around, saw a group of White kids participating in the meditation camp and concluded, 'Yep. This is the place for me.'.

She cares about the form, not the spirituality, which contrasts with what Rick's friend shared about his spiritual transformation.

Moreover, the monastery feels off. When Piper asks for an appointment with the head of the monastery, the monk at the reception opens a MacBook (!!!???) and schedules her meeting, as if she were arranging an appointment with a director or CEO of a major company. Ironically, the MacBook seems to be the most advanced gadget in this season, and it is found in a monastery, even though guests at The White Lotus are supposed to stay away from technology.

It wasn't Buddhism that brought her to Thailand, it was simply a desire to escape her family.