1. Why would younger Chinese be angry at Taiwan? Because like terrorists, Chinese "hate freedom" and are "jealous about democracy"? Unless you are brain-washed by Fox news, this is not the case.
2. PLA is under firm civilian control. The so-called military-civilian disunion in events like the anti-satellite test and J-20 first flight is nothing but speculations by Western media. Even if Chinese economy implodes, which is highly unlikely, there is no reason to suspect China will go to a large-scale War such as invading Taiwan. When Chinese economy imploded in 1959-62, China only had a limited conflict with Indian, not because Chinese leaders wanted to distract Chinese people, but because Cuban missile crisis gave Chinese the opportunity to act under radar screen. During Culture Revolution, Chinese economy stagnated for 10 years, yet nothing happened.
Good points. It's not that Chinese "hate freedom" or are "jealous about democracy" (I don't know where you're getting those ideas), but that China is not yet unified. The unification of China has been a centuries-long process for Chinese rulers since the Qing dynasty. Why do think China celebrated the return of Hong Kong? Because it was a righting of an old imperial wrong, the much-maligned "unequal treaties" that led embarrassed China throughout the 19th century. I think many Chinese see the RoC's encampment in Taiwan as an extension of Western imperialism because they were backed, and remain backed, so fervently by the West. It's like if the American South had seceded and the fought the North to a standstill: would the North be happy to let the status quo go on, or seek to settle the argument once and for all?
Besides, there are tangible strategic benefits to gaining control over Taiwan, like all its fortified ports and airfields, all the Western technology sold to the ROC military, the ability to tax an additional 23 million people, the ability to leverage an even larger economy in trade negotiations to extract more favorable concessions, fishing waters, the Taiwanese base on Itu Aba which is the largest island in the Spratly Islands, and better access to the Diaoyu Islands from which to push Japanese patrols away.
The Chinese military and used to be more closely alligned. They used to have huge business and economic interests until the CCP forced them to divest their interests in that and focus on being a military. They are a huge bureaucracy, and even with the watchful eyes of the CCP and integration of top leadership into the Poliburo, there are some organization tendencies that will always be there. Young officers are hungry to prove themselves in combat. Young solders are gung-ho to kill the enemy. Weapons designers yearn to see how their years of hard work stacks up against the enemy.
Here's the thing: practice creates a demand for the real thing. It's just human psychology. It's why football players are raring to go at the start of the season because they want that challenge, they want to scrimmage against someone else besides their teammates. It's PC but disingenuous for a weapons scientist to say "We worked really hard on the new J-20, spent years fine-tuning it, running it through all kinds of scenarios, but we hope we will never see it used in combat."
The American, British, and French militaries have no such problem because they are constantly engaged in combat somewhere in the world. They are like the guys who get work out and go to Fight Club every week to let off steam. The Chinese, on the other hand, are the guys who work out, learn martial arts, practice constantly, but swear up and down they hope they never have to use their skills.
Yeah, right.