Hmm, I wonder how much time you spend in Taiwan to say such a thing. For those of us who were here in the 90s when the Mainlanders were lobbing missiles over Taipei, that is an oddly ignorant statement to make. If we go back decade-by-decade we learn that the Chinese have been actively bombing islands claimed by Taiwan ever since WWII ended and only stopped temporarily when threatened with nuclear annihilation.

No, the CCP has never been "fine" with Taiwan's existence. The hostility towards Tsai is mostly just down to chauvinistic bigotry. Anger about a woman in power or anything that has to do with Taiwan's politics has nothing to do with the aggression. The reason for focusing on Taiwan is completely domestic to China. The leadership in China fears its own population and needs to manufacture an external threat to justify its existence. This has nothing to do with Taiwan's politics and everything to do with the internal power struggles of the CCP which is increasingly doubling down on bad bets.