What the complexity buys you is that BBRs metrics max_BW, min_RTT, and the ACK aggregation/batching metrics are actual parameters of the network, and observable with passive instrumentation of the packet streams. Traditional CC is a collection of heuristics to estimate cwnd, which has a clear interpretation in terms of action (when to send), but the optimal cwnd can't easily be observed from the packet stream.
I think this alone will have impact, in terms of being able to reason about CC behaviors.
Thanks,
--MM--
The best way to predict the future is to create it. - Alan Kay
We must not tolerate intolerance;
however our response must be carefully measured:
too strong would be hypocritical and risks spiraling out of control;
too weak risks being mistaken for tacit approval.