@davidlohner since Fediverse was originally used when referring to AP, I don't think it should be changed just because their are other federated protocols being developed.
That being said, when referring to AP directly or platforms that integrate AP directly is when I'll refer to Fediverse. However, if a platform is bridged to AP from their original protocols, I'll say "bridged to the Fediverse with BridgyFed/Momostr/etc" so that others are not confused about which platforms are direct players here.