Hikaru hasn't been forgotten. She is just finishing with all her dates in Japan before moving full time to America in October. The reason why they don't mention her is that she basically is booked for the dates that AEW has shows so it doesn't make sense to talk to her if she won't show up.
Jericho wasn't on Fyter Fest and got mentioned. Moxley wasn't on FFTF and he got mentioned. If you want someone to seem strong you can benefit from mentioning them when they aren't around.