The risks don’t outweigh the potential benefits. Building a functional nuke isn’t an operation with a couple of laptops and internet connection. Also, Taiwanese economy is extremely tied to China. Things aren’t really black and white here. It’s not like all Taiwanese hate all mainlanders, nobody flies between countries and etc. Supermajority of people actually support status quo, rather than aiming for complete independence. It’s not an easy thing to balance.
Good neighbours, strong fences. You don’t need to hate your neighbour to appreciate sovereignty. If anything, returning to mutual respect between Taipei and Beijing, a stance which was being moved towards until Xi, should further cross-strait ties.