Good article but I think the suggestion that other pairs "copied" the forward outside death spiral from Deanna/Max is a bit misleading. Other pairs actually introduced this element somewhat concurrently with Deanna/Max; Pavliuchenko/Khodykin did it in 2019, Sui/Han did it at the 2022 Olympics, Alisa Efimova did it with Blommaert at 2023 Worlds.
The difference that Deanna/Max brought to it, in the 2022-23 season, was the addition of a forward pivot, instead of the standard back pivot (as discussed in this
2022 interview). That "double forward" outside death spiral was indeed unique to Deanna/Max. I don't think they have performed the "double forward" since 2022-23, as far as I can recall.