Nobody is giving them more deference than the other. In a perfect world, the ROC would be the one and only surviving entity from this mess and the PRC would be a relic of history.

That isn’t what the facts on the ground are though. The ROC no more has sovereign jurisdiction over the mainland than the PRC does over Taiwan. Which is to say that at this point they are functionally separate sovereign nations independent of each other, regardless of the claims by either the PRC or the ROC. Or put another way, the way I did the first fucking time: Taiwan is an independent nation.