I fiat mine in the legal/financial world so I completely get where nostr:npub1t0nyg64g5vwprva52wlcmt7fkdr07v5dr7s35raq9g0xgc0k4xcsedjgqv is coming from. Custodial and hosted are similar terms with parallel meanings, implying a level of centralized control, but have significantly different legal financial implications.
Custodial means a central entity holds and controls funds on behalf of the user.
Hosted means a central entity controls the platform for a certain application or function.
This distinction is extremely important in the current hostile regulatory environment and it is vital not to conflagration the two publicly.
Again, Custodial implies certain very real financial legal responsibilities, mandatory registrations, and consequences for noncompliance.