Trustlessness is a binary option, not a spectrum. There is no such thing as 'more trust' or 'less trust'.  It's either trustless or not, and Ark falls into the 'trustless' category.

Decentralization, on the other hand, is a spectrum, yes.

bitcoin

Ark AMA

brqgoo

Trustlessness is a binary option, not a spectrum. There is no such thing as 'more trust' or 'less trust'.  It's either trustless or not, and Ark falls into the 'trustless' category.

Decentralization, on the other hand, is a spectrum, yes.

Decentralized ≠ Trustless. 

Protocols/services can be:

1. Centralized and trustless (LSPs & ASPs).
2. Centralized and trusted (WoS).
3. Decentralized and trustless (Bitcoin).
4. Decentralized and trusted (Fedimint).