Tourism, the culprit of commodification?

Yes.
In Taiwan, symbols of tourist experiences are transformed into tangible commodities that are instantly recognizable by people. Things such as t-shirts, key chains and fridge magnet are part of the souvenir culture. It is an example whereby, an intangible culture becomes an item which can be sold.
In the case of indigenous people, their traditional performance are oftenly modified to suit the tourists. For example, shortening the ritual to complement the tourists' tight schedule. This resulted in the simplification of culture. Even though it is said that tourism helps to conserve this cultures, it also resulted in a simplification of the culture.