That is the view of their current president and ruling party, yes.

It is not the position of the opposition party, nor does it align with historical precedents. Treating it as the official policy of Taiwan without a higher level of support such as a popular referendum, proclamation, or amendment to the ROC constitution doesn’t pass the smell test (what happens if the KMT comes back into power? Is Taiwan no longer independent?). No major country outside of Taiwan recognizes it as an independent nation for a reason.

I should note that I am personally supportive of the idea of an independent Taiwan, but I’m also able to check my western bias.