If you look at murtaza12’s excellent latest post on the Emirates Fleet Guide thread, you will notice that all but 5 of EK’s 77W frames are being used, either for cargo only or for mixed cargo/ passenger use.
As we know, the A380 is not suitable for cargo only, so those considerations put together would explain the increased use of A380 frames.
What I don’t know is how serious the effect is of the current COVID test requirements for transfer passengers. Without that I would have thought that passenger volumes might also contribute to the re-emergence of the A380’s, but at this stage I’m not that sure.