Will Xi move on Taiwan? History warns he might: Niall Ferguson
asia.nikkei.com
asia.nikkei.com
Regarding your second point, the rhetoric, if not outright propaganda, is always very interesting. In the context of the Chinese civil war, the mainland taking action against Taiwan is less of an aggression than the US invading Iraq or even Afghanistan. This is not whataboutism, this is just an observation on how terms used vary based on the country, not on their actual actions. Food for thought.
But back on topic: I think this article and these sudden mentions of Taiwan are political games to attack Biden more than anything else. They purport to suggest that Biden is weak and endangering the security of the US and their allies. Note that the person interviewed in this article is also a conservative, Republican supporter and critic of Obama when he was President.