Thanks for checking it, appreciated

- Well, 2x is nothing to write home about.

- DSP-compatibility probably considered but never surfaced as a reason, so hard to guess investigation results. + Pricing and availability of said DSP modules

- Robustness - well, that's one of the primary features of opus, battle tested by WebRTC, WhatsApp etc. (including packet loss concealment (PLC), Bit-Rate Redundancy (LBRR) frames)

- Algorithmic delay for opus is low, much lower than older BT codecs, so that definitely wasn't a deal breaker

- Ability to make money out of standard is definitely important thing to have