It actually says that they were attempting to gigacast their new vehicle as a single piece rather than three pieces, but that proved difficult so they are going back to gigacasting three separate pieces.

But your point stands: they are still gigacasting, just for now they are not doing the very ambitious "gigacast in a single bound" plan.

"Elons whim that resulted in great innovation" as ghostcluster put it referred to gigacasting as three pieces, not gigacasting as one.

sho_hn's comment could have been read as gigacasting being a failure. It is not.

Probably related to them dumping the model 2 project.