@heyspencerb
Yes, as Stanwood said the work made for VoLTE is better used on 20.04 so the job is done only once.
20.04 is more recent hence a much sturdier base to build something.
This will also help for a better bluetooth support especially BLE IIRC.
Basically all the work done for 16.04 is time lost for 20.04.
Maintaining 16.04 is a necessary evil until 20.04 is ready but in order to get a better use of resources 20.04 has to make it out.
I don't think your question made it to the show so I tried to give an answer here.
Please don't answer here and open a new thread if you want to continue the discussion.
Or you'll be able to ask it again in a couple of week.