Delegated is not the same as decentralized.
Nor is it necessarily an antithetical concept. Delegated can be decentralized and effectively as trustless as Satoshi's design is (with some differing assumptions that have differing tradeoffs).
No one said that it was antithetical. The point is they are not the same.
Delegated....
del·e·gate
verb
past tense: delegated; past participle: delegated
ˈdeləˌɡāt/
entrust (a task or responsibility) to another person, typically one who is less senior than oneself.
"he delegates routine tasks"
synonyms: assign, entrust, pass on, hand on/over, turn over, devolve, depute, transfer
"she must delegate routine tasks"
send or authorize (someone) to do something as a representative.
"Edward was delegated to meet new arrivals"
synonyms: authorize, commission, depute, appoint, nominate, mandate, empower, charge, choose, designate, elect
"I don't recall which personnel were delegated to carry out the inspections"
Either it is actually delegated or you had poor word choice in describing your system.
Question: Is your system trustless?