>which the ROC does not claim

ROC claims over all Chinese territory formally via inherent territory / universal succession when Qing abdication transferred sovereignty of all China to ROC, territories predefined as all China. Seperatistards tried to get court to formally define, i.e. redefine it as to not include mainland but court chickened out and tossed it down to political level and original state/claims (again, all china) persists. Cue additional articles of constitution which only tries to hack jurisdiction by creating free area / mainland area as separate political jurisdiction because seperatistards couldn't muster actual political power to constitutionally renounce claims, i.e. change sovereignty.

Hence ROC constitution still maintains full sovereignty claims over all China, while legally tries to spins restricting jurisdiction in few specific territories is life hack for independence, like sharia law applying to Taliban occupied villages translate to sovereignty claim (/s). When its explicitly clear the ROC constitution still fully dejure claims all territories including mainland areas, and will continue to claim, until formal referendum renounces dejure claims.

Until then, it's just revealed preference that TWners don't want dejure independence hard enough. And why pro independant narrative has to do deliberately retarded misreading of constitution / additional articles to support equally retarded / strained interpretation that jurisdiction claims = sovereignty claims. It doesn't. Feeling independent doesn't make one legally so.