Simpler subscriber management, not less control
The objection operators historically raised was that PPPoE gave them control — authentication, per-session accounting, a clean tear-down when a subscriber went away. IPoE delivers the same control through mechanisms that are better matched to modern networks. Address assignment moves to DHCPv4, SLAAC, and DHCPv6. Subscriber identification rides on DHCP Option 82 (and its DHCPv6 equivalents), populated by the access node with the exact line, port, and VLAN context the operator needs. AAA still runs through RADIUS, so authentication, authorization, and accounting are fully preserved — the BNG simply keys them to an IP session and the Layer-2 circuit rather than to a PPP session.
The result is that operators lose none of the policy control they actually use — rate limiting, tiered plans, lawful accounting, dynamic policy from RADIUS CoA — while shedding the session-establishment plumbing that generated most of the complexity.