This kind of tech is actually curiously commonplace in DSC. It first appeared in the Klingon spacesuits that had foldaway helmets - and there it ought to have stayed IMHO. But by the second season, Starfleet suits were doing the same thing, and the gravity doodad used for asteroid capture in "Brother" also folded out of nowhere.
It would have been lovely for only Georgiou's Section 31 spacesuit to have the Klingon technology allowing for the Hammerspace helmet, stolen from that very source. But no... The foldaway wings are just a slight variation on Burnham's foldaway helmet.
Timo Saloniemi
The helmets are a bit more forgivable IMHO if you just handwave nanotech, because there's clearly enough space within the bulked up shoulder/back of the unit to house the matter needed to "unfold" the helmet.
That isn't the case with the wings.